Question

Consider that people with blues eyes must have two alleles for blue eyes since blue eye color is a recessive trait. A blue-eyed person and a brown-eyed person have an offspring with blue eyes. What must be true about the brown-eyed person?

a. they must have two alleles for blue eyes
b. they must have one alleles for blue eyes and one allele for brown eyes
c. they must not have the dominant brown eye allele
d. they must have two alleles for brown eyes

Answer 1

Full Connections Academy Quick Check

1. A version of a gene is called

allele

2. The trait for blue eyes in humans is caused by a recessive allele. If this gene is named capital e, what is the genotype of a blue-eyed person?

ee

3. Describe the relationships among genes, dna, and traits.

Traits are determined by genes, which are composed of dna.

4. In mice, the gene for tail length has two alleles. A long tail is dominant to a short tail. If a long-tailed mouse that is heterozygous mates with a short-tailed mouse, what are the chances of having offspring with short tails?

50%

5. What is meant by a phenotype ratio in a Punnett square?

The fraction of possible offspring that can be observed to have a trait

Step-by-step explanation:

Answer 2

A.


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