punnet squares are a useful tool in genetic studies. Which of the following describes the most likely use of this tool?
a. To quantify proportions of offspring with polygenetic traits
b. To determine the genotypic ratios of crosses
c. To determine frequencies of recombination
d. to measure phenotypic variability

Answers

Answer 1

Answer:

B

Explanation:

To determine the genotypic ratios of crosses


Related Questions

what are the major groups of animals and how to they differ

Answers

There are many living things in the world. To keep them simple and easier to remember, the scientists had identify many groups of animals. The six main groups are: invertebrates, mammals, birds, amphibians, reptiles and fish.

Why is digestion of fats difficult as compared to that of other nutrients?

Answers

This is because fats are insoluble in water and therefore are more difficult to digest than any other nutrients. They also present as large globules.

Hope that helped!!! k

Answer:

Fats take longer time to digest than carbohydrates. Fats can't be digested easily as its insoluble in water and are presented as large globules. The bile juice that gets secreted breaks down the fat from bigger droplets into smaller ones.

If a force of 90 N is applied to each cart, which cart has the greatest
acceleration? *
1 point​

Answers

Answer: Cart 1 would have the greatest acceleration. It weights less and if you apply force it will go faster than other carts.

Explanation:

(at least so I think, don't shame me if I am wrong)

A testcross involves an individual exhibiting the dominant phenotype but an unknown genotype being crossed with an individual that has a(n) ___________ genotype.

Answers

Answer and Explanation:

You will find the complete answer and explanation in the attached file due to technical problems.

What is chromosomes?Write in brief about the structure of a chromosome.must include all points with explanations

Answers

Answer:

Please find the detailed explanation below

Explanation:

A chromosome is thread-like material that carries the long strands of the genetic material (DNA), which in turn carries the gene. The chromosome is the found form of nuclear material in the nucleus.

Due to the long nature of the DNA molecule, they cannot fit into the cell. Hence, to ensure they fit, the cell wraps the DNA molecule around a set of protein called HISTONE proteins to form a NUCLEOSOME. Each nucleosome is made up of DNA coiled around a set of 8 proteins called HISTONE OCTAMER. The nucleosome structure becomes more compacted and further wound around the histone to form a CHROMATIN. This chromatin then undergoes condensation to form the visible CHROMOSOME structure.

Drag each label to the correct location on the chart. Classify each process as weathering or erosion. PLEASE HELP me (I'm stuck) NO homo THOO

Answers

Lets do numbering of the labels to make labelling clear.

1. The Colorado River carves land in Arizona to form the Grand Canyon.

2. Cracks form in a sandstone wall surrounding a house.

3. A marble statue near the science museum is changing color due to rainfall.

4. After a rainstorm, soil and rock pieces litter the roadways.

5. The sand dunes in the Sahara Desert are changing shape.

Answer:

Weathering:

2. Cracks form in a sandstone wall surrounding a house.

3.A marble statue near the science museum is changing color due to rainfall.

Erosion:

1. The Colorado River carves land in Arizona to form the Grand Canyon.

4. After a rainstorm, soil and rock pieces litter the roadways.

5. The sand dunes in the Sahara Desert are changing shape.

Explanation:

Weathering and erosion, in both the processes rocks are broken down into particles but both the processes are different from each other. Weathering can be physical, chemical or biological process in which rock particles degrade without any movement while erosion is purely a movement of sediments in which particles move from one place to another under the influence of water and wind.

So, on the basis of this difference we can classify each label to the correct location:

Weathering (no movement of particles after degradation):

2. Cracks in a sandstone wall of a house.

3. Changing color of marble statue due to rainfall.

Erosion (Movement of particles from one place to another):

1. Formation of Grand Canyon, when the Colorado River carves land in Arizona.

4. Soil and rock pieces litter on roadways after rainstorms.

5. Changing shape of dunes in sahara desert.

Answer:

weathering - colorado river carves land in arizona to form the grand canyon. cracks form in a sandstone wall surrounding a house. a marble statue near the science museum is changing color due to rainfall

erosion - after a rainstorm, soil and rock piees litter the roadways. the sand dunes in the sahara desert are changing shape.

Explanation:

What evidence supported the Davson-Danielli model for the cell membrane?
A. Electron micrograph pictures showing a blue center surrounded by 2 layers.
B. Presence of proteins that was unaccounted for.
C. Diffusion models predicted fluid flowing into the cell at a rate consistent with their model.
D. Electron micrograph pictures showing 2 separate layers.

Answers

The answer is A

Electron micrograph pictures showing a blue center surrounded by 2 layers.

A. Electron micrograph pictures showing a blue center surrounded by 2 layers.

What is the importance of cell membranes?

The plasma membrane, or the cellular membrane, gives safety for a mobile. It also gives a fixed surrounding in the mobile. And that membrane has numerous distinctive features. One is to move nutrients into the cell and additionally transport toxic materials out of the cell.

What are the functions of the cell membrane?

identification, communication, regulation of solute exchange through the membrane,isolation of the cytoplasm from the external environment.

Learn more about cell membranes here: https://brainly.com/question/1768729

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Functions of the large intestine include Select one: A. most of the chemical breakdown of food. B. absorption of bile salts. C. secretion of vitamins. D. reabsorption of water and compaction of feces. E. production of gas to move waste toward the rectum.

Answers

I'm afraid brainly won't let me upload the answer so I attached it to a file.

It appears that your answer contains either a link or inappropriate words. Please correct and submit again!

Which is the FALSE statement about this blood pressure measurement? 147/92 A. 92 is the diastolic number. B. 147 is the systolic number. C. This is a high blood pressure measurement. D. This is a normal blood pressure measurement.

Answers

Answer:

The false statement is - option D.

Explanation:

The lower value is known as diastolic number which is the pressure in the arteries when the heart takes rest in between two consecutive heart beats. Diastolic value shows the pressure of arteries when heart fills with blood.

The upper value or number is known as the systolic number, it is the pressure value of arteries of an individual during the contraction of hear. The normal blood person of a health person is range from 80/60mmhg to 120/90 mmhg, above this range is considered as high blood pressure.

Thus, the false statement is - option D.

11.
Asexual reproduction is absent in
(a) Amoeba
(b) Paramecium
(c) Plasmodium
(d) Roundworm​

Answers

Explanation:

roundeorm is correct answer in this question

what is the volume of a cylinder if the height is 6 cm and the radius is 4 cm?​

Answers

Answer:

v = πr²h

v = 3.142*4²*6

v = 301.71cm³

Explanation:

volume of the cylinder = πr²h

describe the direction of dna replication and why that is important

Answers

Answer: Roles of DNA polymerases and other replication enzymes. ... which require a template and a primer (starter) and synthesize DNA in the 5' to 3' direction. ... Topoisomerase also plays an important maintenance role during DNA replication.

Explanation:

hard to explain

If the number of cigarettes smoked increases, then the risk for lung cancer increases. Independent variable: _______ Dependent variable: _______ If the number of sharks swimming in a coastal region increases, then the number of shark attacks on humans will also increase. Independent variable: _______ Dependent variable: _______ If the amount of milk a person drinks increases, the strength of his or her bones will stay the same. Independent variable: _______ Dependent variable: _______

Answers

Complete Question:

Part A: Identifying Variables

Read the following hypotheses and identify the variables.

If the number of cigarettes smoked increases, then the risk for lung cancer increases.

Independent variable: _______

Dependent variable: _______

If the number of sharks swimming in a coastal region increases, then the number of shark attacks on humans will also increase.

Independent variable: _______

Dependent variable: _______

If the amount of milk a person drinks increases, the strength of his or her bones will stay the same.

Independent variable: _______

Dependent variable: _______

Answer/Explanation:

Dependent variables are variables that is dependent on the independent variables. That is, it is the variable that changes as the independent variable changes.

Depedent variable is the main interest if a researcher. It is the variable that is measured in a research work.

In the above given hypotheses, the dependent and independent variables are shown below:

1. "risk for lung cancer" is dependent on the "number of cigarettes smoked".

"Risk for lung cancer" => dependent variable

Number of cigarettes => independent variable

2. "number of shark attacks on humans" is dependent on "number of sharks swimming".

Dependent variable => number of shark attacks on humans

Independent variable => number of sharks swimming

3. Dependent variable => strength of bone

Independent variable => amount of milk a person drinks

Answer:

Lab: Heart Rate  

Part A: Identifying Variables

The dependent variable happens as a result of values/changes associated with the independent variable.

Independent variable: number of cigarettes smoked

Dependent variable: risk for lung cancer

Independent variable: number of sharks swimming in a coastal region

Dependent variable: number of shark attacks on humans

Independent variable: amount of milk a person drinks

Dependent variable: the strength of his or her bones

Part B: Heart Rate

Hypothesis: If I hold my breath for 30 seconds, then my heart rate will

(choose 1) increase/decrease.

Independent variable: holding my breath

Dependent variable: heart rate

Part C:

The heart rate decreases because oxygen exchange in the lungs decreases.

This depends on what you chose for heart rate in the hypothesis. If you said the heart rate decreases after holding your breath, and the results showed the heart rate decreased, then the hypothesis is supported. If you said the heart rate decreases after holding your breath, and the results showed the heart rate increased, then you refuted the hypothesis.

Heart rate can change due to an increase or decrease in activity, moving positions such as sitting and standing, and emotions.

Example: Increase in activity—jumping jacks

Hypothesis: If I do five jumping jacks, then my heart rate will increase.

Test hypothesis. You can use the average resting heart rate from the previous experiment. If you do an experiment with an increase in physical activity like jumping jacks, then your data will reflect an increase in heart rate because the body requires more energy, which requires more oxygen, increasing the overall flow of blood in the body.

Support or refute the hypothesis based on the results. The hypothesis is supported if it aligns with the observed results. The hypothesis is refuted if the results don’t match the statement based on the variables.

Testing more than one variable at a time makes it difficult to interpret the results and support or refute the hypothesis. With one variable, the results can be associated with changes to that variable. To get the most reliable data to support or refute a hypothesis, an experiment should be completed several times to see if the results show the same trends.  

 

 

Explanation:

Penn Foster

Which of the following is an example of population growth? Group of answer choices the average weight of Americans has increased substantially in the past decade. tropical fish have been found in more northern waters than their usual habitat. the number of people in a town has increased by 25% in the past 5 years. the number of butterflies in a region have stayed the same from 1950-2010.

Answers

Answer:

the number of people in a town has increased by 25% in the past 5 years.

Explanation:

Hope it helps.

One side of your face is identical to the other side. You are _____. radially symmetrical asymmetrical bilaterally symmetrica

Answers

Answer:

For the answer to the question above, asking if One side of your face is identical to the other side. Then you are bilaterally symmetrical.

I hope my answer helped you. Feel free to ask more questions. Have a nice day!

Explanation:

Answer:

Bilaterally symmetrical

Explanation:

From my understanding, radially symmetrical means identical halves around the central axis.

Asymmetrical means not symmetrical at all

Leaving us with Bilaterally symmetrical, which is basically identical parts but as right and left.

That's the best i can explain so there is a diagram to help understand.

please answer the question​

Answers

Answer:

B

Explanation:

b! hopefully that helps haha

What are two ways that society affects the progress of science?

Answers

Answer:

Technology usually affects society more directly than science because it solves practical problems and serves human needs (and may create new problems and needs). In contrast, science affects society mainly by stimulating and satisfying people's curiosity and occasionally by enlarging or challenging.

Explanation:

Lactose (milk sugar) is a carbohydrate
that is formed by combining galactose and glucose.
Which term best describes this molecule?
ESHTE
O monosaccharide
O disaccharide
O monomer
O starch

Answers

Answer:

Lactose is a disaccharide.

Becoz it consists of two components

Answer:

it is B

Explanation:

using scientific terms, describe the feeding relationships between thr organisms in the following food chain.

grass > grasshopper > field mouse > owl

5000kJ of energy is available in the grass.

Answers

Answer:

Grass, meat / flesh

what is a warning safety sign​

Answers

Answer:

Hey there!

A warning safety sign is a sign that warns you that there may be a safety hazard around you.

Let me know if this helps :)

Look at the DNA sequence (1st Picture) Which sequence shows a substitution mutation? (2nd Picture)

Also, can you explain how you got the correct answer?

Answers

Answer:

Sequence A

CGTTACTGCAAT to CGTGACTGCAAT

Explanation:

Mutation refers to any change, whether big or small, that occurs in the nucleotide sequence of a DNA/gene. This change can either be caused by replicational errors or induced by mutagens. Mutation can be of different types depending on the effects on the affected organism (mutant).

A substitution mutation is a kind of mutation in which one or more nucleotide base is replaced by another in a sequence. This is the case here as the

original sequence: CGTTACTGCAAT

Mutated sequence: CGTGACTGCAAT

The fourth base, T has been replaced by G in the upper strand of the DNA sequence.

Gene Expression Quick Check

Explanation:

1.DNA and RNA hold the code to create proteins that are the key to gene expression.

2.Endoplasmic Reticulum

3.CGTTACTGCAAT to CGTGACTGCAAT

4.The proteins are expressed differently in each cell.

5.mRNA is translated into amino acids.

According to the theory of plate tectonics,which is one feature that plates carry?

Answers

Answer:

According to the theory of plate tectonics, seafloor features do plates carry.

Explanation:

There are many rough spots which can no longer hold, the sudden release of the built-up motion releases, and the sudden movement under the sea floor causes a submarine earthquake in the area.

Answer:

seafloor

Explanation :).

the cell wall in plants is made of CHITIN. Correct and rewrite the following

Answers

Answer:

See below

Explanation:

The correct statements can be two. Either:

1) The cell wall of plants is made up of cellulose

2) The cell wall of fungi is made up of chitin.

Answer:

chintin is the chemical components of the cell walls of fungi

Match the following: Hypoxia. A. May be cuased by tumors, mucus, or inflammatory material.B. May be caused by left sided heart failure.C. Huge amounts of harmful free radicals cause profound CNS disturbances, coma, and death D. Is difficult to identify in dark-skinned individuals.

Answers

Answer:

it is c

Explanation:

In order to determine whether you have hypoxia, your doctor will need to check the amount of oxygen in your blood. Therefore, option (C) is correct.

What do you mean by hypoxia?

Hypoxia is low levels of oxygen in your body tissues. It causes symptoms like confusion, restlessness, difficulty breathing, rapid heart rate, and bluish skin.

Moreover, hypoxia is a state in which oxygen is not available in sufficient amounts at the tissue level to maintain adequate homeostasis; this can result from inadequate oxygen delivery to the tissues either due to low blood supply or low oxygen content in the blood (hypoxemia).

Hence, heart and lung function issues can lead to five categories of conditions that cause hypoxemia: ventilation-perfusion (V/Q) mismatch, diffusion impairment, hypoventilation, low environmental oxygen and right-to-left shunting.

Learn more about hypoxia:

https://brainly.com/question/14570337

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Need help with this question

Answers

Answer:

she should experiment the hypothesis made by using a different specie in the same vase and record the changes over time

Answer:

A. She should repeat the experiment with the same type of flower and photograph the changes over time.

Which compound is produced during regeneration? PGA G3P RuBP rubisco

Answers

Answer:

RuBP is the answers

Answer:

C) RuBP is the answer on edge.

Explanation:

just made a 100%, if you ever have a question i´m glad to help!

i need 4 more brainlest to get expert it would mean a lot if i could have the brainlest, please and thank you!!

Can someone please help me!!???

Answers

Explanation:

plant cell only

nucleuscell wallchloroplastgolgi apparatus cell membraneribosome

both plant and animal cells

nucleuscell membraneribosomegolgi apparatus

what is puberty explain it​

Answers

Puberty is when your body matures, you start to grow hair in new places, your voice starts to crack, you start to have weird urges, you also (if you are male) start to get an erection, females start to get “wet” (or they feel tingly is the best way I can explain)
Puberty is a transitional period between childhood and adulthood, during which a growth spurt occurs, secondary sexual characteristics appear, fertility is achieved, and profound psychological changes take place

What is:
a) Metamorphosis
b) Photosynthesis
c) Plant cycle
d) Absorption
e) Menustration
f) Sex.
Accurate answers please.​

Answers

Answer:

a) Metamorphosis is a process by which an animal develops after birth including change in body structure.

b) Photosynthesis: this is the process used by plants to make their food.

c) Plant cycle: the generation and process/the adopted way in which plants grow.

d) Absorption is the ability for a light object/surface to be able to soak/take in something.

e) This is when a woman sees her monthly cycle/discharge of blood in a woman.(stage of puberty).

f) Sex is when someone have sexual intercourse/gender.

Explanation:

Hope they help.

the process by which water boils into a steam is​

Answers

Answer:

Hey hey your answer is evaporation

Answer:

Your answer is evaporation.

Explanation:

The rate of change of water into water vapour is called evaporation. For example, heating if water into water vapour.

Hope this helps....

Have a nice day!!!!

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