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 If the P1 generation is a rose comb (RRpp) crossed with a pea comb (rrPP), which of the following represents the correct genotype and phenotype of the F1 offspring? Select one: a. Genotype Phenotype RRPP Single comb b. Genotype Phenotype RrPp walnut comb c. Genotype Phenotype RrPp pea comb d. Genotype Phenotype RRPP walnut comb

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
10th Edition
ISBN:9781305967359
Author:STARR
Publisher:STARR
Chapter13: Patterns In Inherited Traits
Section: Chapter Questions
Problem 6GP: In sweet pea plant, an allele for purple flowers (P) is dominant when paired with a recessive allele...
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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 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
If the P1 generation is a rose comb (RRpp) crossed with a pea comb (rrPP), which of the following represents the correct genotype and phenotype of the F1 offspring?
Select one:
a.
Genotype Phenotype
RRPP Single comb
b.
Genotype Phenotype
RrPp walnut comb
c.
Genotype Phenotype
RrPp pea comb
d.
Genotype Phenotype
RRPP walnut comb
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