Genetics Quiz - Heredity

What is a phenotype?

• possible combinations of alleles in a gene

• physical expression of a gene

• whether an allele is dominant or recessive

Which of the following allele combinations is homozygous?

• Aa

• AA

Which of the following allele combinations is heterozygous?

• Aa

• AA

Which of following is homozygous recessive?

• Aa

• AA

• aa

What do you call an allele that shows its trait even when only 1 copy is present?

• recessive

• hidden

• dominant

• active

If black fur (F) is dominant and orange fur (f) is recessive, what is this kitten's genotype?

• Ff

• FF

• ff

• orange

• black

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A variation of a gene is called ________.

• a gene

• an allele

• a phenotype

• a chromosome

Tags

NGSS.HS-LS3-2

Brown hair (B) is dominant to blonde hair (b). What is the probability that two parents who are both heterozygous with brown hair will have a blonde baby?

• 0%

• 25%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

How many alleles does a child receive from each parent for a specific trait?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

Which of the following is considered "purebred" or "true-breeding?"

• heterozygous

• homozygous