Question

Punnet Square Homework
12 of 14 12 of 14 Items









Question
POSSIBLE POINTS: 7.14
Select all individuals who would have a Recessive Phenotype
Responses

DD
DD

Dd
Dd

cc
cc

CC
CC

Cc
Cc

dd

Answer 1

To determine which individuals have a recessive phenotype, we first need to understand the basic principles of genetics as they relate to dominant and recessive alleles.

1. **Dominant alleles** (represented by uppercase letters, e.g., "D" or "C") can mask the expression of recessive alleles (represented by lowercase letters, e.g., "d" or "c"). An individual with at least one dominant allele (genotypes DD, Dd, or CC, Cc) will express the dominant phenotype.

2. **Recessive phenotypes** are expressed only when an individual has two recessive alleles (genotype "dd" or "cc" in your examples).

Now let's evaluate each of the provided genotypes:

- **DD**: Homozygous dominant – displays dominant phenotype.
- **Dd**: Heterozygous – displays dominant phenotype.
- **cc**: Homozygous recessive – displays recessive phenotype.
- **CC**: Homozygous dominant – displays dominant phenotype.
- **Cc**: Heterozygous – displays dominant phenotype.
- **dd**: Homozygous recessive – displays recessive phenotype.

Based on this analysis, the individuals with recessive phenotypes are:

- **cc**
- **dd**

So, the correct selections for individuals with a recessive phenotype are **cc** and **dd**.