The comb shape of chickens is an example of an interesting inheritance pattern. Two genes, each with a dominant and recessive allele, determine comb phenotypes as follows: Comb Shape Description Genotype Single Comb homozygous recessive for both r and p rrpp Walnut comb both dominant alleles are present; R and P alleles are present R_P_ Pea comb the dominant allele P is present and the dominant allele R is absent rrP_ Rose comb the dominant allele R is present and the dominant allele P is absent R_pp Which of the following represents the correct phenotypes of the F2 offspring? Select one: a. Phenotype Single Walnut Pea Rose 9/16 3/16 3/16 1/16 b. Phenotype Single Walnut Pea Rose 3/16 1/16 9/16 3/16 c. Phenotype Single Walnut Pea Rose 1/16 9/16 3/16 3/16 d. Phenotype Single Walnut Pea Rose 3/16 9/16 1/16 3/16
The comb shape of chickens is an example of an interesting inheritance pattern. Two genes, each with a dominant and recessive allele, determine comb phenotypes as follows: Comb Shape Description Genotype Single Comb homozygous recessive for both r and p rrpp Walnut comb both dominant alleles are present; R and P alleles are present R_P_ Pea comb the dominant allele P is present and the dominant allele R is absent rrP_ Rose comb the dominant allele R is present and the dominant allele P is absent R_pp Which of the following represents the correct phenotypes of the F2 offspring? Select one: a. Phenotype Single Walnut Pea Rose 9/16 3/16 3/16 1/16 b. Phenotype Single Walnut Pea Rose 3/16 1/16 9/16 3/16 c. Phenotype Single Walnut Pea Rose 1/16 9/16 3/16 3/16 d. Phenotype Single Walnut Pea Rose 3/16 9/16 1/16 3/16
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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The comb shape of chickens is an example of an interesting inheritance pattern.
Two genes, each with a dominant and recessive allele, determine comb
| Comb Shape | Description | Genotype |
|---|---|---|
| Single Comb | homozygous recessive for both r and p | rrpp |
| Walnut comb | both dominant alleles are present; R and P alleles are present | R_P_ |
| Pea comb | the dominant allele P is present and the dominant allele R is absent | rrP_ |
| Rose comb | the dominant allele R is present and the dominant allele P is absent | R_pp |
Which of the following represents the correct phenotypes of the F2 offspring?
Select one:
a.
| Phenotype | |||
|---|---|---|---|
| Single | Walnut | Pea | Rose |
| 9/16 | 3/16 | 3/16 | 1/16 |
b.
| Phenotype | |||
|---|---|---|---|
| Single | Walnut | Pea | Rose |
| 3/16 | 1/16 | 9/16 | 3/16 |
c.
| Phenotype | |||
|---|---|---|---|
| Single | Walnut | Pea | Rose |
| 1/16 | 9/16 | 3/16 | 3/16 |
d.
| Phenotype | |||
|---|---|---|---|
| Single | Walnut | Pea | Rose |
| 3/16 | 9/16 | 1/16 | 3/16 |
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