What explains how the parents in a family both have the same eye color, but some of their children have a different eye color? Assume for this example that eye color is determined by a single gene.

A. One parent is homozygous dominant, and the other heterozygous for a gene that controls eye color allowing some of the children to express a different trait.

B. The parents are both homozygous dominant for a gene that controls eye color allowing some of the children to get two recessive alleles.

C.One parent is homozygous dominant, and the other homozygous recessive for a gene that controls eye color allowing some of the children to express a different trait.

D. The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles.

Answers

Answer 1

The correct option is D. The parents are both heter0zyg0us for a gene that controls eye color allowing some of the children to get two recessive alleles.

What is complete dominance?

When the dominant allele completely masks the recessive allele, we talk about complete dominance.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait. The dominant allele is hiding the expression of the recessive allele.

In the exposed example, let us assume that the alleles that code for eye color are the followings,

E is the dominant allele and codes for the dominant colore is the recessive allele and codes for the recessive color

If at least one parent is h0m0zyg0us dominant for the trait, EE, the whole progeny will express the dominant trait because all of them will carry at least one dominant allele.

If both parents are heter0zyg0us Ee, some children will express the dominant trait and some other the recessive trait. This is because some of the children receive at least one dominant allele and some others only receive recessive alleles.

Cross:

Parentals) Ee   x   Ee

Gametes) E   e    E   e

Punnett square)     E     e

                       E    EE    Ee

                       e    Ee    ee

F1) Genotype

1/4 = 25% of the progeny is expected to be h0m0zyg0us dominant EE

1/2 = 50% of the progeny is expected to be heter0zyg0us Ee

1/4 = 25% of the progeny is expected to be h0m0zyg0us recessive ee

    Phenotype

3/4 = 25% of the progeny is expected to have the dominant eye color

1/4 = 25% of the progeny is expected to have the recessive eye color

The correct option is D. The parents are both heterozygous for a gene that controls eye color allowing some of the children to get two recessive alleles.

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B I think is the answer sorry if I’m wrong

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The scientists employed the use of  X-exome sequencing to identify rare gene mutations in the families.

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This involves the process of  genes on chromosome X being identified through positional cloning and used ib various studies.

This was used to identify  rare gene mutations in the families in Finland thereby making it the most appropriate choice.

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What is the shortest interval on record between the birth of two siblings?

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Answer:

208 days

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Answer:

Ture

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1. A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg. After collision, the two sticked and moved together with the same speed. Solve for the final speed of the combined object after collision and identify their direction.​

Answers

Given,

A 42,000 kg train car travelling at 10 m/s toward a stationary train car with a mass of 40,000 kg.

What is momentum?

Momentum is a product of the mass of a particle and its velocity. Momentum is a vector quantity which means it has both magnitude and direction. Its formula = mass × velocity.

Solve for momentum:

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= 200m/s

-Thus they collison at the same speed of 200m/s.

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Please help.


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animals with better genetics will survive more often than animals with poor genetics that cannot benefit them. for example: if there were mice that lived in a desert with orange sand, orange colored mice would be more likely to live because they blend in with their environment and can hide from predators. on the contrary, mice of colors that stand out from the orange sand like black or white mice will be less likely to survive because predators can spot them easier. (the color of the mouse is based on genetics)

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Oxygen is the CORRECT ANSWER

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They produce oxygen by photosynthesis they take in carbon dioxide and make oxygen.

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The option that best describes a community experiencing secondary succession is : ( D )This community of grasses began growing after a fire killed the trees and shrubs previously at this site

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Answer:The wavelength decreases

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James Surowiecki's analysis is consistent with the slogan that: A. too many cooks spoil the broth. B. birds of a feather flock together. C. two heads are better than one. D. opposites attract.

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What is acronym?

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Acronym has been always starts with capital latter and the first word's letter is always capital. Capitalization has the most important part of writing as it has the rule of writing that the first latter of the word that starts a sentence must be capital or starts with capital latter.

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Answers

Answer:

a nitrogenous base, an amino acid, and a pentose sugar

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Ribonucleic acid and deoxyribonucleic acid are two chemicals that are crucial for genetics and other biological processes. Both of them contain pentose sugars, phosphate groups, and nitrogenous bases. Adenine (A), cytosine (C), and guanine (G) are the nitrogenous bases in both DNA and RNA; thymine (T) and uracil (U) are also present in both.

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Which are characteristics of bryophytes? (Select all that apply.)

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Answers

Answer:

​Explanation:

there u go

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