Question 2

Question

Directions: The table lists the hair color and genotype of six individuals where black hair is dominant over blond. Use the table to answer any questions that follow

HAIR COLOR

Name

Hair color

Alleles

Mr. Johnson

black

homozygous

Mrs. Johnson

blond

homozygous

M. Valdez

blond

heterozygous

Mrs. Valdez

black

heterozygous

Mr. Elwood

black

Mrs. Ellwood

blond

heterozygous

homozygous

If Mr. and Mrs. Johnson had four children together, what color of hair would the children likely have?

Ca

All 4 of the children would have black hair.

Only 3 of the children would have black hair, and 1 child would have blond hair.

All 4 of the children would have blond hair.

Only 2 of the children would have black hair, and 2 of the children would have blond hair.

Answer 1

Based on the information provided, Mr. Johnson has black hair (homozygous genotype) and Mrs. Johnson has blond hair (homozygous genotype). Since black hair is dominant over blond hair, all of their children would likely have black hair. Therefore, the correct answer is: All 4 of the children would have black hair.