22. A rooster with a particular comb morphology called walnut was crossed to a hen with a type of comb morphology known as single. The F₁ progeny all had walnut combs. When F₁ males and females were crossed to each other, 93 walnut and 11 single combs were seen among the F₂ progeny, but there were also 29 birds with a new kind of comb called rose and 32 birds with another new comb type called pea. a. Explain how comb morphology is inherited. b. What progeny would result from crossing a homozygous rose-combed hen with a homozygous pea-combed rooster? What phenotypes and ratios would be seen in the F₂ progeny? c. A particular walnut rooster was crossed to a pea hen, and the progeny consisted of 12 walnut, 11 pea, 3 rose, and 4 single chickens. What are the likely genotypes of the parents? d. A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the possible genotypes of the parents?
22. A rooster with a particular comb morphology called walnut was crossed to a hen with a type of comb morphology known as single. The F₁ progeny all had walnut combs. When F₁ males and females were crossed to each other, 93 walnut and 11 single combs were seen among the F₂ progeny, but there were also 29 birds with a new kind of comb called rose and 32 birds with another new comb type called pea. a. Explain how comb morphology is inherited. b. What progeny would result from crossing a homozygous rose-combed hen with a homozygous pea-combed rooster? What phenotypes and ratios would be seen in the F₂ progeny? c. A particular walnut rooster was crossed to a pea hen, and the progeny consisted of 12 walnut, 11 pea, 3 rose, and 4 single chickens. What are the likely genotypes of the parents? d. A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the possible genotypes of the parents?
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![22. A rooster with a particular comb morphology called walnut was crossed to a hen with a type of comb morphology known as single. The
F₁ progeny all had walnut combs. When F₁ males and females were crossed to each other, 93 walnut and 11 single combs were seen
among the F₂ progeny, but there were also 29 birds with a new kind of comb called rose and 32 birds with another new comb type
called pea.
a. Explain how comb morphology is inherited.
b. What progeny would result from crossing a homozygous rose-combed hen with a homozygous pea-combed rooster? What
phenotypes and ratios would be seen in the F₂ progeny?
c. A particular walnut rooster was crossed to a pea hen, and the progeny consisted of 12 walnut, 11 pea, 3 rose, and 4 single chickens.
What are the likely genotypes of the parents?
d. A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the possible genotypes of the
parents?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1aff400d-cefa-44dc-aaef-8057cf5c14a4%2F60562512-e8fa-41e6-b9ad-069850f83307%2Fdu9tpy8_processed.jpeg&w=3840&q=75)
Transcribed Image Text:22. A rooster with a particular comb morphology called walnut was crossed to a hen with a type of comb morphology known as single. The
F₁ progeny all had walnut combs. When F₁ males and females were crossed to each other, 93 walnut and 11 single combs were seen
among the F₂ progeny, but there were also 29 birds with a new kind of comb called rose and 32 birds with another new comb type
called pea.
a. Explain how comb morphology is inherited.
b. What progeny would result from crossing a homozygous rose-combed hen with a homozygous pea-combed rooster? What
phenotypes and ratios would be seen in the F₂ progeny?
c. A particular walnut rooster was crossed to a pea hen, and the progeny consisted of 12 walnut, 11 pea, 3 rose, and 4 single chickens.
What are the likely genotypes of the parents?
d. A different walnut rooster was crossed to a rose hen, and all the progeny were walnut. What are the possible genotypes of the
parents?
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Step 1: Define Mendelian inheritance
VIEWStep 2: Explain inheritance of comb morphology
VIEWStep 3: Explain genetic cross between walnut rooster and single hen
VIEWStep 4: Explain cross of rose hen and pea rooster
VIEWStep 5: Explain cross between walnut rooster and pea hen
VIEWStep 6: Explain cross between walnut rooster and rose hen
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