Genetics Quiz

What determines if a child will have brown eyes when one parent has brown eyes and the other has blue eyes?

• The child will have blue eyes because blue is dominant.

• The child will have brown eyes because brown is dominant.

• The child will have green eyes.

• The child will have a mix of brown and blue eyes.

How is a dominant allele represented in genetic notation?

• With a lowercase letter

• With a symbol

• With a capital letter

• With a number

What is the genotype called when an individual has two different alleles for a gene?

• Homozygous dominant

• Homozygous recessive

• Monozygous

• Heterozygous

Which phenotype will a person have if they are heterozygous for the earlobe gene?

• Attached earlobes

• Detached earlobes

• No earlobes

• Both attached and detached earlobes

If a person has two recessive alleles for the widow's peak gene, what will their phenotype be?

• They will not have a widow's peak.

• They will have a partial widow's peak.

• They will have a double widow's peak.

• They will have a widow's peak.