During which trimester of a woman's pregnancy do the toenails, lips, and eyelashes of the fetus usually appear?
O A. First trimester
O B. Fourth trimester
O C. Second trimester
O D. Third trimester ​

Answers

Answer 1

It is

Explanation: Second Trimester: The Baby at 20 Weeks

Your baby is covered by fine, feathery hair called lanugo and a waxy protective coating called vernix. Eyebrows, eyelashes, fingernails, and toenails have formed. Your baby can even scratch itself. Your baby can hear and swallow.


Related Questions

g Jack fell down and broke his crown. He broke the most anterior bone connected to the coronal suture. What LETTER is this, and what is the NAME of this bone

Answers

Coronal suture. This extends from ear to ear. Each frontal bone plate meets with a parietal bone plate at the coronal suture.

the results Mendel obtained during his experiments. It showed that if you cross two plants that were true-breeding for different colors (purple and white), the offspring or first generation (F1) would be ______________ instead of true-breeds, and all were _____________ in color. Interestingly, when he crossed two of these F1 plants, their offspring did not all come out _____________. Instead he obtain a ratio of ______ purple-flowered plant for every ______ white-flowered plant. He concluded that the “heritable factor” for the ____________ trait (white flowers) was not destroyed in the F1 generation. Instead it had been _______________ by the “heritable factor” of the ________________ trait (purple flowers).

Answers

Answer:

1. Heterozygous

2. Purple

3. Purple

4. 3

5. 1

6. Recessive

7. Masked

8. Dominant

Please find the missing answers to the questions in BOLD.

Explanation:

As illustrated in this question, Gregor Mendel used the color trait of pea plant to discover his law of dominance.

The results Mendel obtained during his experiments. It showed that if you cross two plants that were true breeding for different colors (purple and white), the offspring or first generation (F1) would be HETEROZYGOUS (Pp) instead of true-breeds, and all were PURPLE in color.

Interestingly, when he crossed two of these F1 plants (Pp × Pp), their offspring did not all come out PURPLE, instead he obtain a ratio of 3 purple-flowered plant for every 1 white-flowered plant. He concluded that the “heritable factor” for the RECESSIVE trait (white flowers) was not destroyed in the F1 generation. Instead it had been MASKED by the “heritable factor” of the DOMINANT trait (purple flowers).

10.
All of the following are examples of specialized cells except

Answers

Answer:

Zygote

Explanation:

When a neuron is stimulated and sodium channels open, the process of has begun. Structures of the nervous system surrounding, but not part of the central nervous system are part of the . Two consecutive neurons communicate at a , where they physically come together. are a group of natural chemicals that reduce the perception of pain. Supporting cells of the nervous system are collectively called . When potassium channels have been open long enough to go below resting membrane potential, has occurred.

Answers

Answer:

- When a neuron is stimulated and sodium channels open, the process of depolarization has begun.  

- Structures of the nervous system surrounding, but not part of the central nervous system are part of the peripheral nervous system

- Two consecutive neurons communicate at a synapse, where they physically come together.  

- Endorphins are a group of natural chemicals that reduce the perception of pain.  

- Supporting cells of the nervous system are collectively called neuroglia

- When potassium channels have been open long enough to go below resting membrane potential, hyperpolarization has occurred.

Explanation:

Neurons undergo depolarization in response to diverse stimuli (e.g., heat, light, electrical, chemical, etc). The depolarization occurs when sodium (Na+) ions pass through specific channels  (i.e., open voltage-gated Na+ channels) into a neuron, which causes an increase in the positivity of membrane potential. On the other hand, hyperpolarization occurs when potassium (K+) channels remain open and Na+ channels reset, thereby producing an increase in negativity of membrane potential. The peripheral nervous system (PNS) is composed of the cranial nerves, spinal nerves, peripheral nerves, and neuromuscular junctions, which connect the Central nervous system (CNS) to the organs, limbs, and skin. Endorphins (e.g., serotonin) are polypeptides secreted by the pituitary gland and CNS to relieve stress and pain. Neuroglia refers to a class of neural cells that have ectodermal (e.g., astroglia, peripheral glial cells) or mesodermal (e.g., microglia) origins. Neuroglia cells are involved in diverse roles, including, among others, the formation of the blood-brain barrier, homeostatic support, provision of nutrients for neurons, structural support to nerve cells, etc.

what are the difference between DNA and RNA​

Answers

Answer:

There are two differences that distinguish DNA from RNA: (a) RNA contains the sugar ribose, while DNA contains the slightly different sugar deoxyribose (a type of ribose that lacks one oxygen atom), and (b) RNA has the nucleobase uracil while DNA contains thymine.

I need help asap
I need help asap​

Answers

Answer:

c

Explanation:

i dont care

The pedigree below concerns the autosomal recessive disease phenylketonuria (PKU). The couple marked A and B are contemplating having a baby but are concerned about the baby having PKU. What is the probability of the first child having PKU

Answers

Answer: Hello your question some missing data attached below is the complete question

answer:

P( first child having PKU )  0.25 ≤ x ≤ 0.5

Explanation:

The pedigree father has PKU ( pp ) ( From the top right )

pedigree mother = PP

The possible resultant progeny = Pp  

Resultant progeny marries non-carrier  ( Pp x PP ) = PP , PP, pP, pP

Hence B is either  ; PP ( non carrier ) or Pp ( carrier )

From left

one of the Resultant progeny = pp ( affected ). this simply means pedigree parents where both carriers or sufferers i.e. Pp or pp

Hence A is either ; Pp or pp

The probability of their first child having PKU

= PP x Pp = PP, Pp, PP, Pp ( probability = 0 in this case )

= Pp x Pp = PP, Pp, pP, pp ( probability = 1/4 * 100 = 25% )

= Pp x pp = Pp, Pp, pp, pp ( probability = 2/4 * 100 = 50% )

P( first child having PKU )  0.25 ≤ x ≤ 0.5

lets denote dominant Gene = PP,  recessive Gene = pp

6. The probability that the two offspring you produced share every genotype in common is extremely low. Explain why they are likely to be different.

Answers

Answer:

Sexual reproduction is able to generate genetic variation in offspring by 1-independent assortment and 2-recombination during meiosis, and 3-random fertilization.

Explanation:

Sexual reproduction is a type of reproduction that increases the amount of genetic variation in offspring by three main mechanisms: independent assortment of homologous chromosome pairs and recombination during meiosis, and random union of gametes during fertilization. First, sexual reproduction is associated with the independent assortment of chromosomes during meiosis, i.e., the orientation of homologous chromosome pairs is a random process that is different for every cell that undergoes meiosis. In consequence, chromosomes assort randomly into gametes, thereby the segregation of alleles of a gene pair is independent of the segregation of another set of alleles of a different gene (as stated in the law of independent assortment). Second, sexual reproduction generates genetic variation by recombination, which is the exchange of genetic material between non-sister chromatids during meiosis I (prophase I). This genetic process (recombination) is able to generate new alleles in offspring. Third, sexual reproduction also involves the random union of two haploids (n) gametes during fertilization, which results in the formation of a diploid (2n) zygote that develops into a new individual. In humans, the sperm cell has 8 million possible (2²³) chromosome combinations, which fertilizes an ovum cell that also has approximately 8 million chromosome combinations, thereby producing a tremendous genetic variation in offspring (around 64 trillion possible zygote combinations).

The _______ is the part of the neuron that carries information away from the cell body.

Answers

mitochondria is the part of the neuron that carried information away from the cell body


Which explains why this is the case

Answers

Answer:

i dont know cause the question is missing

Explanation:

Find the number of chromosomes are in each daughter cell when a sperm cell with a diploid number of 26 chromosomes undergoes meiosis process​

Answers

Answer:

At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes.

How many cranial nerves is it?

Answers

Explanation:

there are 12 cranial nerves

Natural selection is most likely to be the cause of a change in a population's
allele frequencies when:
A. the ecosystem experiences few disturbances,
B. the population drops below its carrying capacity.
C. the predators are removed from the ecosystem,
D. the population has reached its carrying capacity.
PLEASE HELP URGENT

Answers

Answer:handheld c

Explanation:bend c smlOc

C is probably the right answer to me

Discuss the internal and external structure of the testise​

Answers

Answer:

External- The testes are covered by a tough membranous shell called the tunica albuginea. Within the testes are very fine coiled tubes called seminiferous tubules. The tubules are lined with a layer of cells (germ cells) that develop from puberty through old age into sperm cells (also known as spermatozoa or male gametes).

Internal -Each testicle is covered by tough, fibrous layers of tissue called the tunica. The outer layer is called the tunica vaginalis and the inner layer is called the tunica albuginea. ... There are about 800 seminiferous tubules tightly coiled within each testicle.

Explain how the ear helps humans in balancing.​

Answers

Answer:

The vestibular system which is essential to our sense of balance is located within the inner ear

Explanation:

The vestibular system is the sensory apparatus of the inner ear that provides the brain with the information required for maintaining body balance (postural equilibrium), detecting the position and motion of the head and determining the position of the whole body in relation to gravity. The vestibular system in each inner ear is composed of five organs: 3 semicircular ducts located in the innermost part of each ear (i.e., the inner ear), which are sensitive to angular accelerations (head rotations), and 2 otoliths organs referred to as the utricle and saccule, which are sensitive to linear accelerations. Each semi-circular duct exhibit a different orientation (superior, horizontal, and posterior) in order to sense different movements (e.g. nodding, rotating).

A 45-year-old woman named Christine is measured as having the following skinfold thicknesses on the right side of her body: Triceps: 14mm; Thigh: 32mm; Suprailium: 28mm. Estimate her body fat percentage.

Answers

Answer:

The skinfold method, the measurement of subcutaneous fat folds, is the most widely adopted field method for the assessment of body fat, especially in children.

It is based on the principle that fat is of a known density and by “summing” measurements of subcutaneous fat thickness across the body, total and regional fat can be estimated.

Skinfold thickness measurements are typically used to rank individuals in terms of relative total “fatness”, or to assess subcutaneous fat at various regions of the body.

Population specific equations are used to derive estimates of percent body fat.

In infancy, it might be the sole tool available for assessing body composition longitudinally as other methods may not be feasible, or may only be suitable for use at body sizes e.g. PEA POD, can only measure infants up to 10kg.

The most generally used field method for determining body fat, particularly in kids, is the skinfold method, which involves measuring subcutaneous fat folds.

What is skinfold method?

Skinfold method is defined as a method for determining how much body fat there is. It entails delicately pinching the skin and underlying fat in several locations using a tool called a caliper. To acquire precise findings using this quick and easy body fat estimation technique, a high level of competence is needed.

It is based on the idea that since subcutaneous fat thickness measurements may be "summed" to estimate total and regional fat because subcutaneous fat has a known density. Measures of skinfold thickness are widely used to categorize individuals based on their relative degrees of overall "fatness" or to assess subcutaneous fat in various bodily regions. Estimates of the percent body fat are derived using equations that are specific to a population.

Thus, the most generally used field method for determining body fat, particularly in kids, is the skinfold method, which involves measuring subcutaneous fat folds.

To learn more about skinfold method, refer to the link below:
https://brainly.com/question/12277553

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which fundamental units are involved in force do step Wise ​

Answers

Force = ma

We know, the unit that the S.I. unit of mass is Kg.

We also know that a = (v - u)/t.

We know that v = d/t and u = d/t and the S.I. unit of t(time) is s.

We know that the S.I. unit of d(displacement) is m.

So, the S.I. unit of v is m/s and the S.I. unit of u is m/s and the S.I. unit of t is s.

So, the S.I. unit of a is m/s×s or m/s²

So, the unit of force is

(unit of m) × (unit of a)

= kg × (m/s²)

= kg.m/s²

=

[tex]kg \: m \: {s}^{ - 2} [/tex]

Or more simply,

F = ma

=> F = m{(v-u)/t}

Putting units,

Newton = kg[{(m/s) - (m/s)}/s]

=> Newton = kg{(m/s)/s}

=> Newton = kg(m/s²)

=> Newton = kg.m/s²

=> Newton = kg.m.(s^-2)

what is the function of the liver?

Answers

Answer:

The Liver Stores Glycogen and Vitamins.

Its helps in Excreting Bilirubin which is produced from the breakdown of Red Blood Cell(RBC).

It also helps In the Production of Bile(This is stored in the gall bladder).

Look at the scientific names for the two organisms below:

Felis domesticus
Felis bengalensis

What can you tell about these two organisms from their scientific names?
A.
You cannot tell anything about an organism from its scientific name alone.
B.
The organisms are different subgroups of the same species.
C.
The organisms are different species but belong to the same genus.
D.
The organisms belong to the same kingdom but different phyla.

Answers

Answer:

B. The organisms are different subgroups of the same species.

QUESTION:-

Felis domesticus (Domestic CAT)

Felis bengalensis (Leopard Cat)

What can you tell about these two organisms from their scientific names?

A.

You cannot tell anything about an organism from its scientific name alone.

B.

The organisms are different subgroups of the same species.

C.

The organisms are different species but belong to the same genus.

D.

The organisms belong to the same kingdom but different phyla.

ANSWER:-

FIRST PART IS THE GENERIC PART ( genus name )

SECOND PART IS THE SPECIFIC NAME ( specific epithet )

ATQ:-

AS THE GENERIC OR GENUS NAME SAME SO THEY BELONG TO SAME GENUS

BUT DUE TO DIFFERENT SPECIFIC NAME OR SPECIFIC EPITHET WHICH SHOWS THAT THEY BELONG TO DIFFERENT SPECIES .

SO URE ANSWER IS PART C->

C. The organisms are different species but belong to the same genus.

how many people in the world​

Answers

Answer:

khjdaVSJHv

Explanation:ASjkbxzjb

SCamzhb

8. Two rabbits are bred together. One is heterozygous for agouti coat
(genotype: Cch) and the other is albino. What are the possible phenotypes
of their offspring? Construct a Punnett square to support your answer.

Answers

Answer:

- Parental cross = Cch  x chch  

- F1 = 1/2 Cch (agouti coat); 1/2 chch (albino coat) >> 1:1 phenotypic ratio

Punnett  square:  

          ch         ch

C       Cch       Cch

ch    chch      chch

 

Explanation:

A heterozygous individual is an individual who has two different gene variants (i.e., alleles) at a particular locus. In this case, individuals having the "agouti coat" trait are heterozygous carrying both 'C' and 'ch' alleles. On the other hand, a homo-zygous individual has the same allele at a given locus (here, the 'chch' genotype associated with the albino phenotype). Therefore, as observed in the Punnett Square above, when a heterozygous parent is crossed with a homo-zygous recessive parent for a single gene, alleles segregate in the gametes of both parents so an expected 1:1 phenotypic ratio will be observed.

This one too, please?

(3rd time)


I need explanation for your answers, even though it's multiple choices, I still need your explanation for it.

DUE TOMORROW!

If your answer is NONSENSE it will be deleted as soon as possible!

But if your answer is CORRECT, HELPFUL, HAS AN EXPLANATION, I'll chose your answer as the BRAINLIEST ANSWER!​

Answers

Answer:

1, group 1

2 group 7

3 group 2

4 D

5 B

6 A

Answer:

7. A 1

8. C 17

9. B 2

10. (d) C and D

11. (b) reactivity

12. (a) corrosion

13. (c) activity series

Explanation:

7. , 8, and 9,

Group 1 elements are named as alkali metals

Group 2 elements are known as alkaline earth metals

group 17 metals are known as halogens

10.

Na and Xe have one valency whereas the other two elements have variable valency which is a property of transition metals so the answer is (d) C and D

11.

It;s the definition of reactivity

12.

Definition of corrosion

13.

definition of activity series

What is an office what is an office ​

Answers

Answer:

Explanation:

An office can be referred to a building or rooms or a room which is arranged and set up with furnitures and things needed for commercial use or professional work to achieve a goal.

An office is also refered to position of authority occupied by someone to perform some tasks.

Answer:

here's your answer

Explanation:

The office helps in controlling the activities of different people and department of an organisation. Through controlling it ensures that the various activities of business are performed with much accuracy. Memory Center: Office protects important information of past in a safe manner.

Question 8 of 24
Which item is a carbon sink?
A. Beach sand
B. Ocean water
C. Glaciers
D. Forest fires
SUBMIT

Answers

Answer:

oceans water

Explanation:

choose the letter of the correct answer 1. Which one of the following is NOT an organic compound? a. Methane b. Carbon dioxide d. Lactic acid C. Oil​

Answers

Answer:

B

Explanation:

Which of the following is a process that is prompted by a question?
A. Conclusions
B. Observation
C. Measurement
D. Inquiry

Answers

Answer:

D

Explanation:

Should be correct I guess.

g 20. Name two bones connected by an interosseous membrane found in the crus and/or sural region. Which one is the medial bone

Answers

Answer:

Tibia and fibula. Tibia (medial bone)

Explanation:

The tibia is the medial bone of the lower leg (it is the second-largest bone next to the femur), whereas the fibula is the lateral bone of the lower leg. The tibia functions to transmit the majority of the force in the lower leg. The tibia articulates at the proximal end with the femur and fibula; where this bone (tibia) articulates at the distal end with the fibula and the talus bone of the ankle. The tibia and fibula are connected via an interosseous membrane, which is a thin sheet of connective tissue that spans the space between two bones.

Which of the following sentences uses commas correctly? Carol was the last person out of the house wasn't, she? Carol was the last person, out of the house wasn't she? Carol was the last person out of the house, wasn't she? Carol, was the last person out of the house wasn't she?

Answers

Answer:

The third sentence......................

Explanation:

The correct sentence is Carol was the last person out of the house, wasn't she?

Why is a comma important?

Commas help your reader figure out which words go together in a sentence and which parts of your sentences are most important. Using commas incorrectly may confuse the reader, signal ignorance of writing rules, or indicate carelessness.

What are the Rules of commas?

Comma Rules

Use a comma after an introductory phrase or clause. Use commas before and after a parenthetical phrase or clause. Use a comma to separate two independent clauses linked by a coordinating conjunction (and, but, for, nor or, so, yet) Use a comma to separate items in a series.

Learn more about the use of commas here https://brainly.com/question/2251561

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help me what is this stuff please i really need halp

Answers

Answer:

i dont no the answer

Explanation:

hahahahahahahahahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahhahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahahah

If you grew up with a family pet, then you have surely noticed that they often seem to hear things that you don’t hear. Now that you’ve read this section, you probably have some insight as to why this may be. How would you explain this to a friend who never had the opportunity to take a class like this?

Answers

Answer:

Force her/him

Explanation:

so that she /he can hear u

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Charlies friend has been questioning her gender identity and is now being harassed by a group of students at school.Which statement best explains how Charlie should respond?He should avoid the situation since he is not directly affectedHe should confront the group of students and tell them to stopHe should encourage his friend to fight back and defend herselfHe should tell a trusted teacher and get advice on how to proceed Question 11 (5 points)What letter in Spanish do you see but do not hear?O a) CO) ) d) G Given that the point (-2,8) is on the graph of an equation that is symmetric with respect to the x-axis, what other point is on the graph? (Type an ordered pair) The valves in the heart open and close to move blood in between heart chambers. O a) three directions O b) two directions O c) four directions d) one direction Last Thursday, each of the students in M. Fermat's class brought one piece of fruit to school. Each brought an apple, a banana, or an orange. In total, 20% of the students brought an apple and 35% brought a banana. If 9 students brought oranges, how many students were in the class Solve the following equation usingdistribution.2 (4x 12) = 5(3) (4x) (*) (12) = 52x - 6 = 5+6+62x = 11.. i need help asap look at pics please i need this class done completely in two hours What were male citizens of ancient Athens expected to do? pls help me......... complete the square to form a true equation;x^2-2x+__=(x-__)^2 What do historians call the region in which civilization first emerged Please help me ?!!!!!!! how do atoms lose electrons ? A bank wishes to estimate the mean balances owed by customers holding Mastercard. The population standard deviation is estimated to be $300. If a 98% confidence interval is used and the maximum allowable error is $80, how many cardholders should be sampled?A. 76B. 85C. 86D. 77 Thank you so much thank yall Help please, I need with the question Compare and Contrast the respective arguments of Henry Stimson and Gar Alperovitz regarding the American use of the atomic bomb. Which of the following is a form of mechanical energy?A. Chemical energyB. Gravitational potential energyC. Thermal energyD. Nuclear energy Maria, Kevin, and Dan have a total of 96$ in their wallets. Dan has 6$ less than Maria. Kevin has 3 times what Dan has. How much do they have in their wallets? Read the paragraph from The Hot Zone. C. J. knew that if people learned what this virus could do, there would be traffic jams heading out of Reston, with mothers screaming at television cameras, "Where are my children?" When he talked to the Washington Post reporters, he was careful not to discuss the more dramatic aspects of the operation. ("I thought it would not be a good idea to talk about space suits," he explained to me much later.) He was careful not to use scary military terms such as virus amplification, lethal chain of transmission, crash and bleed, or major pucker factor. The author most likely included this paragraph to explain some of the reasons for downplaying the seriousness of the situation. describe the ways in which people overreact whenever danger is suspected. persuade the reader that newspapers always blow things out of proportion. illustrate the idea that scientists frequently have to hide the truth from civilians. The curve y=(k-6)x^2-8x+k cuts the x-axis at two points and has a minimum point. Find the range of values of k.