If two heterozyotes for dwarfism have children what proportion of their kids would you expect to be of typical size and not exhibit dwarfism?

Answers

Answer 1

Answer:

3/4 or 75%

Explanation:

This question involves a gene coding for height in humans. The allele for normal height (D) is dominant to the allele for dwarfism (d).

If two heterozygotes for dwarfism are crossed i.e. Dd × Dd, the following gamete will be produced by each heterozygote parent:

Dd - D and d

Using these gametes in a punnet square (see attached image), the genotypes of the expected offsprings will be as follows- DD (1) : Dd (2) : dd (1)

(1) DD - typical normal size

(2) Dd - heterozygous normal size

(1) dd - dwarf

The offsprings expected to be of typical size and not exhibit dwarfism are offsprings DD and Dd, which represent 3/4 of the offsprings. Hence, the proportion is 3/4 or 3/4 × 100 = 75%.

If Two Heterozyotes For Dwarfism Have Children What Proportion Of Their Kids Would You Expect To Be Of

Related Questions

What are the causes of inherited genetic variation

Answers

Answer:

Genetic variation can be caused by mutation which can create entirely new alleles in a population, random mating, random fertilization, and recombination between homologous chromosomes during meiosis which reshuffles alleles within an organism's offspring.

Explanation:

hope this helps!!

Answer:

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

Which of the following are sources of low-level radiation?
A)
medical X-rays
B)
nuclear weapons testing
C)
buring of fossil fuels
D)
all of the above
E)
a and c only

Answers

Answer:

im pretty sure its E

Explanation:

The sources of low-level radiation are A) medical X-rays and E) the burning of fossil fuels, so the correct answer is E) a and c only, as radiation can be classified into two main types: ionizing radiation and non-ionizing radiation.

What is radiation?

Medical X-rays are a type of ionizing radiation used for medical imaging. Although the amount of radiation exposure from a single X-ray is usually very small, frequent exposure to X-rays can increase the risk of cancer. The use of X-rays in medical imaging is carefully monitored to ensure that the benefits outweigh the risks. Ionizing radiation has enough energy to remove tightly bound electrons from atoms, which can cause damage to living tissue and increase the risk of cancer. Medical X-rays and the burning of fossil fuels are sources of ionizing radiation that can produce low-level radiation.

Hence, the sources of low-level radiation are A) medical X-rays and E) the burning of fossil fuels, so the correct answer is E) a and c only.

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A dihybrid cross experiment is carried out on pocket mice. The traits being observed are fur color and tail length. In the F2 generation, 54 mice are dark brown with long tails, 18 mice are dark brown with short tails, 18 mice are tan with long tails, and 6 mice are tan with short tails.

Which traits are dominant?

tan fur, long tail

tan fur, short tail

dark brown fur, short tail

dark brown fur, long tail

Answers

The answer is Dark brown fur, long tail

Answer:

dark brown fur, long tail

Explanation:

compare the hygiene allergies and asthma?

Answers

Answer:

According to the “hygiene hypothesis,” the problem with extremely clean environments is that they fail to provide the necessary exposure to germs required to “educate” the immune system so it can learn to launch its defense responses to infectious organisms. Instead, its defense responses end up being so inadequate that they actually contribute to the development of asthma.

Explanation:

One of the many explanations for asthma being the most common chronic disease in the developed world is the “hygiene hypothesis.” This hypothesis suggests that the critical post-natal period of immune response is derailed by the extremely clean household environments often found in the developed world. In other words, the young child’s environment can be “too clean” to pose an effective challenge to a maturing immune system.

A cross was made between two strains of plants that are agriculturally important. One strain was disease-resistant but herbicide-sensitive; the other strain was disease-sensitive but herbicide- resistant. A plant breeder crossed the two plants and then allowed the F1 generation to self- fertilize. The following data were obtained:
F1 generation: All offspring are disease-sensitive and herbicide-resistant
F2 generation: 157 disease-sensitive, herbicide-resistant
57 disease-sensitive, herbicide-sensitive
54 disease-resistant, herbicide-resistant
20 disease-resistant, herbicide-sensitive
Total: 288 Formulate a hypothesis that you think is consistent with the observed data. Test the goodness of fit between the data and your hypothesis using a chi square test. Explain what the chi square results mean.

Answers

Answer:

Hypothesis: Alleles assort independently from each other.There is not enough evidence to reject the null hypothesis.

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached file.

Describe the ways in which the bacteria cells cluster together

Answers

Answer:

There are several different morphologies that describe particular bacteria and archaea. Archaea can have a round (cocci) shape or a rod (bacilli) shape.Bacteria can also be circular, rod, or a spiral shape (spirochete).

I neeed help ASAP please??!!!

Answers

The boys will not move since they are pulling at the same force. Hope this helps. C btw.

Which one is right??

Answers

Answer: A

Explanation:

Why does ice float on water?
A.
The temperature of ice is lower than the temperature of water.
B.
The temperature of water and ice are the same.
C.
The density of Ice is less than the density of water.
The density of ice is greater than the density of water.
D.
Reset
Next

Answers

Answer:

The density of ice is less than the density of water

Explanation:

If the offspring of the cross showed ccdominance, what would the eyes of the offsping look like?

Answer.. the offspring would have one circle eye and one star eye.

Answers

Answer:

That is what I would choose

Explanation:

When two different phenotypes of an organism are crossed, a third phenotype is created in which both of the parental traits are present. This is known as codominance.

What are the results of codominance cross?

The concept of codominance states that although both phenotypes are dominant, they cannot coexist. Codominance would result in patches rather than merging, with areas of prominent white expression and areas of dominant red expression.

The statements made about codominance are all accurate. The full expression of both alleles is present.

The distinct results of both alleles are present in the heterozygous phenotype. A multiple-allele characteristic has (less than / only / more than) two alleles in the corresponding gene.

Therefore, The offspring would have one circle eye and one-star eye.

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Look at the diagram. What type of cell is shown by number 4?

Answers

Answer:

we cannot see a diagram

2.
Which of the following is an example of a prototype for the concept of leadership on an athletic team?

Answers

Answer:

the star player

List three types of blood cells and indicate what they do to help your body maintain homeostasis

Answers

Answer:

Both cells present in the blood come from the marrow of the bone. They start their lives as stem cells and develop into three main cell types: RBCs, WBCs, and platelets.

RBCs- The red blood cells supply the cells with oxygen and extract carbon dioxide. ... In controlling the processes of the body and preserving homeostasis, blood plays an important role. It carries out many functions within the body, including: supplying tissues with oxygen (bound to hemoglobin carried in red cells)

WBCs-Ce with white blood

Explanation:

There 4 types of connective in the body List the 4 types and then thoroughly explain why these tissues are grouped together as connective tissues What do they have in common?

Answers

Answer:

Connective tissues come in a vast variety of forms, yet they typically have in common three characteristic components: cells, large amounts of amorphous ground substance, and protein fibers.

Explanation:

Which best describes the process of peer review?
A. Scientists examine each other's work to make sure it is not biased
or unreliable.
O
B. Scientists prevent other scientists from seeing their experimental
data
C. Scientists allow other people to choose their control groups.
D. Scientists allow other people to draw the conclusions from their
work

Answers

Answer:

Explanation:

A. Scientists examine each other's work to make sure it is not biased

or unreliable.

What characteristics make white dwarf stars different from main sequence stars?

Answers

Answer:

Eventually, a main sequence star burns through the hydrogen in its core, reaching the end of its life cycle. At this point, it leaves the main sequence. Stars smaller than a quarter the mass of the sun collapse directly into white dwarfs. White dwarfs no longer burn fusion at their center, but they still radiate heat.

What Describes the layer directly beneath Earths plates

Answers

Answer:

The layer below the rigid lithosphere is a zone of asphalt-like consistancy called the Asthenosphere . The asthenosphere is the part of the mantle that flows and moves the plates of the Earth. The mantle is the layer located directly under the sima. ... The mantle is composed of very hot, dense rock.

Explanation:

Answer: This layer would be called the asthenosphere.

Which animals have webbed Feet?

Answers

Answer:

Ducks, pelicans, crocodiles, platypuses, along with some frogs, dogs, and cats.

Answer:

Ducks, pelicans, crocodiles, platypuses, along with some frogs, dogs, and cats.

Explanation:

please answer quick! may give brainliest
What compound makes up carbohydrates?
a.
glucose
c.
amino acids
b.
nucleic acids
d.
phosphates

Answers

I believe the answer is glucose

Lemme know if you get it right :D

Answer:

a .glucose...

Explanation:

please mark as brainiliest

the phosphate groups are the polar part of the phospholipid because they are:

Answers

A single phospholipid molecule has a phosphate group on one end, called the “head,” and two side-by-side chains of fatty acids that make up the lipid “tails. ” The phosphate group is negatively charged, making the head polar and hydrophilic, or “water loving.” The phosphate heads are thus attracted to the water ...

why is system thinking important

Answers

Answer:

Systems thinking is a powerful approach for understanding the nature of why situations are the way they are, and how to go about improving results. Historical perspective is important in understanding the evolution of a situation and in identifying patterns of behaviors over time.

Explanation:

When DNA replicates, the first step is
O proteins move along the DNA and "read" the code
DNA polymerase adds new nucleotides to the old strands
a proofreading enzyme checks to see if there are errors in the order of the nucleotides
the double helix is opened down the middle by an enzyme called helicase

Answers

answer; the double helix is opened down the middle by an enzyme called helicase

this is because the DNA needs to be opened first before any proteins start reading or coding.

Which of the following is true of cholesterol? 4 are correct.
A. it makes up part of the cell membrane structure
B. it is the precursor molecule to make sex hormones and bile
C. it is not found in animal products such as beef
D. it enters the cell via cell-mediated endocytosis
E. it is not found in dairy products such as butter
F.it is made by the liver

Answers

Answer:

F, it is made by the liver

Explanation:

how are unicellular and multicellular organisms different

Answers

Answer:

Unicellular organism are made up of only one cell that carries out all of the functions needed by the organism, while multicellular organism use many different cells to function.

Explanation:

Help ASAP , easy 15 points and a brainly for the first one to reply , just answer the 2 questions

Answers

The first one is the 3rd option and the 2nd one is also the 3rd option

Which of the following is NOT a type of muscle?
Question 19 options: The answer is "LONG" the rest are muscles.

Cardiac

Skeletal

Long

Smooth

Answers

Answer:

Long is not a muscle

Explanation:

the 3 types of muscles are cardia skeletal smooth, have a great day

The answer is "Long." "Long" is not a type of muscle; it seems to be an incorrect option. The correct options for types of muscle are Cardiac, Skeletal, and Smooth.

These are the three main types of muscles found in the human body. Cardiac muscles are found in the heart, skeletal muscles are attached to the skeleton and enable voluntary movement, and smooth muscles are found in various organs and control involuntary movements.

Therefore, "Long" is not a recognized type of muscle and does not fit within the categories of cardiac, skeletal, or smooth muscles.

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An organism that has adaptations that enable it to hibemate for long periods of time is more likely to by found in which of the following biomes:
forest
desert
grassland
tundra

Answers

Tundra; to get through the long and harsh winters.

PLzzz helpp Directions: Analyze the image and answer the question that follows.

1. Which line, red or black, represents a reaction taking place with an
enzyme? How do you know?

Answers

Answer:

red

Explanation:

Enzymes lower the activation energy needed for a reaction to occur.

The correct line is red how I know is cause I’m smart and looked at the other comments

how does the internet work

Answers

Explanation:

internet is used by everyone this can be useful sometimes. this transmits many data and media across interconnected devices. it works its way to a packet controlling the network which follows the IP ( internet protocol ) and the transport control protocol ( TCP )

(hope this helped )

Which feature may interrupt the sides of a composite-cone volcano?

conduits

fumaroles

craters

calderas

Answers

Answer:Famaroles

Explanation:Fumaroles: they are gaseous emissions from lavas in craters at more or less elevated temperatures. Its composition varies according to the temperature of the lavas, in such a way that it changes since the fumaroles appear until their extinction.Fumaroles: they are gaseous emissions from lavas in craters at more or less elevated temperatures. Its composition varies according to the temperature of the lavas, in such a way that it changes since the fumaroles appear until their extinction.Water flows in the form of steam continuously through the cracks of a volcano or volcanic surface because its temperature exceeds 100 °C.Fumaroles: they are gaseous emissions from lavas in craters at more or less elevated temperatures. Its composition varies according to the temperature of the lavas, in such a way that it changes since the fumaroles appear until their extinction.Water flows in the form of steam continuously through the cracks of a volcano or volcanic surface because its temperature exceeds 100 °C.Groups of fumaroles- Dry fumaroles: They are those that come off the melting lava, in the vicinity of the crater. Its temperature is higher than 500oC. They are mainly composed of sodium, potassium and sulfur dioxide and carbon dioxide.- Dry fumaroles: They are those that come off the melting lava, in the vicinity of the crater. Its temperature is higher than 500oC. They are mainly composed of sodium, potassium and sulfur dioxide and carbon dioxide.- Acid fumaroles: with temperatures between 300oC and 400oC, they are constituted by a large amount of water vapor, with hydrochloric acid and sulphurous anhydride.- Dry fumaroles: They are those that come off the melting lava, in the vicinity of the crater. Its temperature is higher than 500oC. They are mainly composed of sodium, potassium and sulfur dioxide and carbon dioxide.- Acid fumaroles: with temperatures between 300oC and 400oC, they are constituted by a large amount of water vapor, with hydrochloric acid and sulphurous anhydride.- Alkaline fumaroles: Temperature close to 100oC, contain water vapor with hydrogen sulfide and ammonium chloride.

The feature may interrupt the sides of a composite-cone volcano is fumaroles. Thus, option B is correct.

What is fumaroles?

They are gaseous emissions from lavas in craters at more or less elevated temperatures. Its composition varies according to the temperature of the lavas, in such a way that it changes since the fumaroles appear until their extinction.

Fumaroles are gaseous emissions from lavas in craters at more or less elevated temperatures. Its composition varies according to the temperature of the lavas, in such a way that it changes since the fumaroles appear until their extinction. Water flows in the form of steam continuously through the cracks of a volcano or volcanic surface because its temperature exceeds 100 °C.

Water flows in the form of steam continuously through the cracks of a volcano or volcanic surface because its temperature exceeds 100 °C. The lavas, in such a way that it changes since the fumaroles appear until their extinction.

Therefore, The feature may interrupt the sides of a composite-cone volcano is fumaroles. Thus, option B is correct.

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