Question

If the gene for white eyes (W gene) is located on X chromosome W= allele for...

If the gene for white eyes (W gene) is located on X chromosome

W= allele for red (Dominant)

w= allele for white

The parents are true breeding.

Prediction of Reciprocal crosses

1.) Red Female x White Male (show punnet square)

Genotype Proportion

Female:

Male:

Phenotype Proportion

Female:

Male:

2.) White Female x Red Male (show punnet square)

Genotype Proportion

Female:

Male:

Phenotype Proportion

Female:

Male:

Homework Answers

Answer #1

1) Red female (X^W X^W) × White male (X^w Y)

Punnet square:

Gametes X^w Y
X^W X^W X^w ( red female) X^W Y ( red male)
X^W X^W X^w ( red female) X^W Y ( red male)

Genotype Proportion: 1:1

Female: X^W X^w (2)

Male: X^W Y (2)

Phenotype Proportion: All red (1)

Female: Red (2)

Male: Red (2)

------

2) Whitefemale (X^w X^w) × Red male (X^W Y)

Punnet square:

Gametes X^W Y
X^w X^W X^w ( red female) X^w Y ( white male)
X^w X^W X^w ( red female X^w Y ( white male

Genotype Proportion: 1:1

Female: X^W X^w (2)

Male: X^w Y (2)

Phenotype Proportion: 1:1

Female: red (2)

Male: white (2)

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is...
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is epistatic over brown and scarlet. White eyes can also result by crossing brown-eyed females (bw) with scarlet eyed males (st) (that is, when both mutant alleles are present). A cross is made between white-eyed females with the genotype w//w (otherwise, homozygous for wild type alleles) and white-eyed males hemizygous for the wild type allele (w+ ). List the expected: a) Genotypes of the P1...
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is...
In Drosophila, the gene for white (w) eyes is on the X chromosome and it is epistatic over brown and scarlet. White eyes can also result by crossing brown-eyed females (bw) with scarlet eyed males (st) (that is, when both mutant alleles are present).A cross is made between white-eyed females with the genotype w//w (otherwise, homozygous for wild type alleles) and white-eyed males hemizygous for the wild type allele (w+ ). List the expected: a) Genotypes of the P1 and...
The white eyes w gene of Drosophila is located on the X chromosome. A fly will...
The white eyes w gene of Drosophila is located on the X chromosome. A fly will be ‘hemizygous’ for the w gene if it has which karyotype? Group of answer choices XX XXY XY Which of the following determines the correct segregation of X and Y chromosomes during meiosis I in humans (males): Group of answer choices Lack of homology between X and Y Presence of “pseudoautosomal” (PAR) regions shared by X and Y The presence of the SRY gene...
Suppose you have a group of beetles. You find that a white eye color in one...
Suppose you have a group of beetles. You find that a white eye color in one of the beetles is due to a point mutation. Refer to B and b (where B is the allele associated with the dominant phenotype, and b is the allele associated with the recessive phenotype) in order to answer the following questions: 1) The cross of a pure breeding male with white eyes with a pure breeding female with normal eyes leads to all offspring...
Question 11 pts ________________ is a specific version of a gene on a homologous chromosome that...
Question 11 pts ________________ is a specific version of a gene on a homologous chromosome that has a corresponding version of a similar gene on a homologous chromosome. For example, hair color gene (ie. red from mom) will be on one homologous chromosome and a possibly different version of hair color gene (ie. black from dad) will be on the other corresponding homologous chromosome. chromosome allele chromatin genome Flag this Question Question 21 pts A ___________ is how you write...
Question text In drosophila (fruit flies): The yellow gene is on the X-chromosome, the gene product...
Question text In drosophila (fruit flies): The yellow gene is on the X-chromosome, the gene product plays a role in body colour. Wild type flies are a light brown/tan in colour, homozygote yellow mutants have a more yellow shaded body colour. We'll use y+ to represent the wild type allele, and y to represent the mutant allele. y+ is dominant to y. The vestigial gene is on chromosome 2. Homozygote vestigial mutants have very short wings, and cannot fly. We'll...
1.In fruit flies, eye color is an X-linked trait. Red eyes (XR) are dominant over white...
1.In fruit flies, eye color is an X-linked trait. Red eyes (XR) are dominant over white eyes (Xr)A homozygous dominant female mates with a white-eyed male. What is the phenotypic ratio among males? a.1:0 (all male offspring will have red eyes) b.1:1 (half of the male offspring will have red eyes and half will have white eyes) c.0:1 (all male offspring will have white eyes) 2.In fruit flies, eye color is an X-linked trait. Red eyes (XR) are dominant over...
a) In radishes, the plants can be tall (allele T) or dwarf (allele t). Tall is...
a) In radishes, the plants can be tall (allele T) or dwarf (allele t). Tall is dominant. Root color can be red (allele RR), white (allele RW), or pink (heterozygote). A radish that is true-breeding for both red roots and tallness (RRRR TT) is crossed with a radish that is true-breeding for both white roots and being dwarf (RWRW tt). Write the genotype and phenotype for the F1 generation. b) Assume the two genes for plant height and root color...
1) One parent has yellow flowers, which is the dominant allele Y. The second parent has...
1) One parent has yellow flowers, which is the dominant allele Y. The second parent has white flowers, the recessive allele y. If the offspring are all yellow, what is the genotype of each parent? 2) A plant is homozygous for the recessive gene "a" causing the plant to be short. What is the genotype and the phenotype of this plant? (In your answer, be very clear about which is the genotype and which is the phenotype). 3) The allele...
A researcher is interested in a novel gene in drosophila called “COVID” which causes the flies...
A researcher is interested in a novel gene in drosophila called “COVID” which causes the flies to become antisocial and maintain a large distance from other flies. She performs two “reciprocal crosses” to determine the possible genetics of this gene. First, she crosses a true-breeding COVID female to a true-breeding wild-type male and produces the following progeny: All of the female progeny are wild-type and all of the male progeny from this cross are COVID. Next, she does a reciprocal...