explain why in some families, all children are of the same sex​

Answers

Answer 1

Answer:

Because their families have the same chromosomes{x for mother & x,y for father}.
Answer 2

Answer:

the mother gives out automatically the x chromosome, and the father can either give an x or y chromosome. some men more often give out more of a certain chromosome. the chromosome the father gives determines the gender of baby. x is girl and y is boy


Related Questions

.
A __________ is a physical trait one can see, while a __________ is the section of DNA associated with a certain trait that causes it to appear.
allele, gene trait
genotype, phenotype
DNA, inherited trait
phenotype, genotype

Answers

Answer:

Phenotype

Genotype

Explanation:

Phenotype is the physical appearance because it's the outward expression of the person, which is determined by one's Genotype.

Question 4
Which BEST describes why certain traits led to an increased frequency within the population of
medium ground finches?
A
because the traits were acquired
B
because the traits were favorable
С
because the traits were inherited
D
because the traits were mutations

Answers

Answer:

Explanation:

c

Which best summarizes the process of protein synthesis what was friedrich miescher contribution to the discovery of the genetic code

Answers

Answer:

He identify DNA as a distinct molecule of the cell.

Explanation:

In the year 1869, Friedrich Miescher separated "nuclein," DNA with associated proteins, from cell nuclei. He was the first scientist who identify DNA and considered as a distinct molecule present in the cell. He is well known for his incorrect tetranucleotide hypothesis of DNA. He formed the first photograph of the structure of DNA and also  created the first accurate model of structure of DNA.

Cellular respiration is essential for the survival of the Euglena. Why?

Please help me. ​

Answers

Answer:

This organism is able to carry out both photosynthesis and cellular respiration. That's why cellular respiration is essential for the survival of the Euglena.

A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions.

What is cellular respiration?

Glycolysis, the citric acid cycle, and oxidative phosphorylation are the three basic processes that take place during cellular respiration. The citric acid cycle happens in the mitochondrial matrix, oxidative phosphorylation happens on the inner mitochondrial membrane, and glycolysis happens in the cytoplasm.

Glucose, ATP, and NAD+ are the initial reactants and ATP and H2O are the end products of cellular respiration. The enzymes phosphofructokinase-1, pyruvate dehydrogenase, and isocitrate dehydrogenase control the rate of cellular respiration.

Disorders that interfere with cellular respiration often impair one or more of the enzymes necessary for it, such as succinyl-CoA synthase or pyruvate kinase.

Therefore, A sequence of chemical processes known as cellular respiration convert glucose into ATP, which can then be used as energy for a variety of bodily functions.

To learn more about cellular respiration, refer to the link:

https://brainly.com/question/13721588

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All of the following are true about the structure of DNA excepta.
a. the long strands of nucleotides are twisted into a double helix.
b. short strands of DNA are contained in chromosomes inside the nucleus of a cell.
c. DNA consists of two strands of nucleotides joined by hydrogen bonds.
d. every DNA nucleotide contains a sugar, a phosphate group, and a nitrogen base.

Answers

Answer:

short strands of DNA are contained in chromosomes inside the nucleus of a cell.

Explanation:

DNA is an acronym for deoxyribonucleic acid. It is composed of a sugar, a phosphate group, and a nitrogen base.

DNA consists of two strands of nucleotides joined by hydrogen bonds. This makes DNA appear in a double helical structure.

Long strands of DNA are contained in chromosomes inside the nucleus of a cell. Long strands of DNA in the nucleus are rolled into neat little bundles. Hence the statement; ''short strands of DNA are contained in chromosomes inside the nucleus of a cell'' is false.

A book is sliding along a desktop. Because the book is in motion, you know that the forces acting on the book are ______? What is the force acting against the book?

Answers

Answer:

Normal force, gravity and Friction.

Explanation:

The forces acting on the book are normal formal force which act or exerts by the table on the book while on the other hand, gravity is a force that acts in the downward direction. Friction is the force that acts against the motion of the book and is responsible for lowering speed of the book that is sliding on the surface of the table. If the friction is low between the book and table then the book moves easily on the surface.

PLEASE SOMEONE HELP MESS

Answers

Answer:

It's B.

Explanation:

uhm, i already went in one? btw, why "mess"? ️ ️

Which is a method that scientist used to determine the composition of earths layers

Answers

Answer:

Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. The seismic waves are bent, sped up, or slowed down, or even reflected when they pass through the earth's layers.

Explanation: GOOD LUCK

Scientists use waves to study the different layers of the earth. Usually, they use seismic waves, which are waves generated by earthquakes or nuclear-test explosions. The seismic waves are bent, sped up, or slowed down, or even reflected when they pass through the earth's layers

A particular enzyme will usually interact with... *

Answers

It’s corresponding molecule that or bonds to. I think it is a substrate.

When 2 or more organisms compete for the same resource there can be a variety of outcomes. What would be one of those outcomes?

Answers

Answer:

The biology branch deals with the relations between and physical environment of organisms.

Explanation:

The principle of competitive exclusion states that if two species occupy the same niche, they cannot exist together (competing for identical resources). Two species whose niche overlap can evolve to have different niches through natural selection, resulting in the distribution of resources.

In ecology, interspecific competition is a form of competition where individuals from different kinds compete in an ecosystem for the same resources (e.g. food or space)... There may be interspecific competition if people of two separate species share a limited resource within a single area.

 In order for a male to have the recessive disease, what what is genotype be?

Answers

Answer:

im pretty sure it will be XX

This is the question I need help with.

Answers

Answer:

where is the question???????????

Where is the question

In which order do organisms return
to an ecosystem during primary
succession after an area's ecosystem
has been wiped out?
A. trees, hearty shrubs, lichens
B. lichens, trees, hearty shrubs
C. lichens, hearty shrubs, trees

Answers

Answer:

lichens, hearty shrubs, trees

Explanation:

Order:

I-bare rocks,

II-pioneers (mosses, lichen, algae, fungi)

III-annual herbaceous plants

IV-perennial herbaceous plants and grasses

V-shrubs, VI-shade intolerant trees, VII-shade tolerant trees.

(please mark me brainliest) :)

Lichens, hearty shrubs, and trees is the correct order in which the organisms return to an ecosystem during primary succession after an area's ecosystem has been wiped out. Thus, the correct option is C.

What is Primary Succession?

Primary succession is the ecological succession which begins in essentially the lifeless areas, such as the regions in which there is no soil or where the soil is incapable of sustaining life where no life form ever existed because of recent volcanic eruption, newly formed sand dunes, or rocks that are left from a retreating glaciers.

The correct order of the Primary Succession is:

Stage I- Bare rocks,

Stage II- Pioneer species such as mosses, lichen, algae, and fungi

Stage III- Annual herbaceous plants

Stage IV- Perennial herbaceous plants and grasses

Stage V- Shrubs, shade intolerant trees, and shade tolerant trees.

Therefore, the correct option is C.

Learn more about Primary Succession here:

https://brainly.com/question/26675203

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I will give Brainliest for the Best Answer!
As hominids evolved, their eyes increased in size and became more forward facing. Which of the following can be inferred from this observation?

A. Hominids became more dependent on vision over time and less so on their other senses.
B. Hominid depth perception decreased, and eye size increased to compensate.
C. Hominid brains increased in size, which required their sensory organs to increase in size as well.
D. Hominids were less likely to sustain injuries when their eyes faced the direction of their motion.

Answers

I think

A is the correct answer.

what is the last stage of meiosis ?​

Answers

Answer:

The last stage of meiosis is called telophase

Answer:

Telophase

Is the last stage of meiosis

Explanation:

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A goal taking which of these lengths of time to achieve is most likely to be a
short-term goal?
A. 25 weeks
B. 25 decades
C. 25 years
D. 25 months

Answers

Answer:

A. 25 weeks

Explanation:

It's the shortest amount of time.

Hope this helps! :)

Answer:

25 weeks

Explanation:

25 minutes would probably be a short term goal. If it takes someone only 25 minutes to do, that would be a pretty short and easy goal. It COULD be 25 weeks.

This sea anemone and this ctenophora both have tentacles, which are body structures that help them catch food. However, sea anemone tentacles are short and can sting, while ctenophore tentacles are long for grabbing and cannot sting. What most likely explains why both species have tentacles and why the tentacles are different

Answers

Answer: Sea anemone and ctenophore both inherited tentacles from a shared ancestor population, but this population separated into different environments. In each environment, different types of tentacles evolved, which helped the populations survive.

Explanation:

most likely explains why both species have tentacles and why the tentacles are different is because sea anemone and ctenophore both inherited tentacles from a shared ancestor,

Then, this population separated into different environments and there was tye evolvement of different types of tentacles evolved, which therefore helped the populations survive.

The first law of thermodynamics states that ___.

when a process converts energy from one form to another, some energy converts into heat, an unusable form of energy
energy can neither be created nor destroyed, but it can change from one form to another
most energy in ecosystems comes from the Sun
energy flows through ecosystems without being recycled

Answers

The first law of thermodynamics states that -

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b. energy can neither be created nor destroyed, but it can change from one form to another.

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During his trip on the HMS Beagle, Darwin found that ______________.
A plants and animals living in temperate regions were most similar to each other, regardless of the continent on which they were found.
B fossils found on a particular continent were clearly not related to the plants and animals living on that continent today.
C plants and animals were similar on every continent and in every type of region.
D plants and animals living on one continent seemed more closely related to each other, than to plants and animals living in similar regions on other continents.

Answers

Answer:

Option D

Plants and animals living on one continent seemed more closely related to each other than to plants and animals living in similar regions on other continents.

Explanation:

From Darwin's discoveries, he noticed that there was a strong relationship between the environment and the characteristics of the living organisms present there.  He proposed that the environmental conditions affected the development of certain traits in organisms present there, in their quest for survival and adaptation.

These traits were passed down from parents to offspring, producing a population of organisms with similar character traits found around the same geographical location (continent in this case)

what is the shark's babies called?
please help me. ​

Answers

Answer:

A baby shark is referred to as a pup.

To my knowledge It is called a pup

what you mean by accessory pigments? ​

Answers

Accessory pigments are compounds that absorbs light. They are found in photosynthetic organisms.

A reptile's body temperature is always the same as that of its surroundings because...

Answers

Because they are cold blooded they cannot control their body temperature, therefore their body temperature is always the same as their surroundings.

What is the path blood takes through the heart, body and lungs.

Answers

Answer:

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body's tissues through the aorta.

Explanation:

Answer:

1) body –> 2) inferior/superior vena cava –> 3) right atrium –> 4) tricuspid valve –> 5) right ventricle –> 6) pulmonary arteries –> 7) lungs –> 8) pulmonary veins –> 9) left atrium –> 10) mitral or bicuspid valve –> 11) left ventricle –> 12) aortic valve –> 13) aorta –> 14) body.

Explanation:

this is full path of blood with every single detail

How is plate tectonics involved in ocean expansion?

Answers

Answer:

The movement of tectonic plates, which determines the distribution, size, and depth of ocean basins, influencing how water is distributed around the continents.

Explanation:

. Revisa las etiquetas de los alimentos que tengas en tu casa para ver si hay alguno vencido. ¿Qué le recomendarías a tu familia? ¿Por qué?

Answers

Answer:

Para comer alimentos sanos y frescos.

Explicación:

Recomiendo a mi familia los alimentos que aún no están vencidos o que son frescos porque los alimentos frescos hacen que nuestra condición de salud sea buena en comparación con los alimentos vencidos. Hay un crecimiento de patógenos como bacterias, hongos, etc.en los alimentos que los hacen dañinos para las personas y causan intoxicación alimentaria en las personas que los consumen, por eso tenemos que ver las etiquetas presentes en los alimentos para verificar su condiciones.

describe 3 ways people can decrease their ecological footprint to help mange earth's resources?

Answers

Reduce Your Use of Single-Use, Disposable Plastics. ...
Switch to Renewable Energy. ...
Eat Less Meat. ...
Reduce your Waste. ...

Guanine bonds with
????

Answers

Answer:

Answer

cytosine

correct me y'all if am wrong ❤️

what substances are released during celluar resparation? (will mark brainliest)

Answers

Answer:

Carbon Dioxide and Water

Explanation:

Water and carbon dioxide are released as byproducts when you breathe.

Answer:

There are two main substances that are released during the process of celluar respiration. These substances are carbon dioxide and water.

Explanation:

4. Refer to the image below. Which statement is FALSE? *
O Option 1: ATP isn't used in this process.
Option 2: This process is an example of passive transport.
O
Option 3: Molecules move from an area of high concentration to an area of low
concentration.
O Option"4: This process occurs across the cell membrane.
O Option 5: ATP is used in this process.

Answers

Molecules move from an area of high concentration to an area of low concentration is F A L S E .

The pH of seawater is ___, making it alkaline. Seawater has a natural buffering mechanism. Carbon dioxide in seawater and is present in the form of __ ions, which makes the seawater alkaline.

Answers

Answer:

8.1 and h+

hope it helps you

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