Genetics Quiz 3 (24-25)

The TYR gene controls the production of pigment in skin, hair, and eye cells. It shows DOMINANT-recessive inheritance.

A - NORMAL PIGMENT

a - albino

We found that the woman from Brazil, Rosamere, was HETEROZYGOUS (Aa) for the gene. This means that she could pass down...

• Either the A allele or the a allele

• Both the A and a alleles together

• Two A alleles

• Only the a allele

Tags

MA.HS-LS3-3.

The TYR gene controls the production of pigment in skin, hair, and eye cells. It shows DOMINANT-recessive inheritance.

A - NORMAL PIGMENT

a - albino

Rosamere is HETEROZYGOUS (Aa) for the gene. Her husband was also HETEROZYGOUS (Aa). What is the chance that they would have an albino child?

• 100%

• 75%

• 50%

• 25%

• 0%

Tags

MA.HS-LS3-3.

The ASIP gene scatters pigment in a leopard's fur. It shows DOMINANT-recessive inheritance.

A = SPOTS ("SPOTTED LEOPARD")

a = solid coat ("black panther")

What phenotype will a leopard with the allele combination Aa have?

• SPOTTED LEOPARD

• black panther

• SPOTTED BLACK PANTHER

• None of the above

Tags

MA.HS-LS3-3.

The ASIP gene scatters pigment in a leopard's fur. It shows DOMINANT-recessive inheritance.

A = SPOTS ("SPOTTED LEOPARD")

a = solid coat ("black panther")

A SPOTTED LEOPARD (AA) mates with a black panther (aa). What is the chance that they will have black panther cubs?

• 100%

• 75%

• 50%

• 25%

• 0%

Tags

MA.HS-LS3-3.

The MC1R gene controls the color of an animal's fur. It shows DOMINANT-recessive inheritance.

E - DARK FUR

e - red fur

Two dogs have a litter of puppies. Most of the puppies have DARK FUR, but a small number of puppies have red fur. What are the genotypes of the parents?

• Both are HETEROZYGOUS (Ee)

• One is homozygous DOMINANT (EE) and the other is homozygous recessive (ee)

• One is homozygous DOMINANT (EE) and the other is HETEROZYGOUS (Ee)

• One is HETEROZYGOUS (Ee) but the other is homozygous recessive (ee)

Tags

MA.HS-LS3-3.

The SILV gene scatters pigment in a dog's fur. It shows incomplete dominance.

MM - DOUBLE MERLE

Mm - MERLE

mm - solid coat

Which of the following combinations of parents could produce a puppy who is DOUBLE MERLE?

• DOUBLE MERLE x solid coat

• solid coat x solid coat

• MERLE x MERLE

• MERLE x solid coat

Tags

MA.HS-LS3-3.