Tutorial 1-3 Content

Question 1

Critical mating

Answer 1

The parents have the same phenotype, but the child has a different phenotype

Question 2

Eye color

Answer 2

• Determined by iris pigment (melanin)
• Back: much melanin (in all eye colors)
• Front: variable melanin (determines color)

Question 3

Epistasis

Answer 3

Gene interaction wherein a gene at locus A masks/suppresses the effects of a gene at locus B

Question 4

Epistatic Gene

Answer 4

The gene that is responsible for masking/suppressing

Question 5

Test Cross

Answer 5

Between a heterozygous parent and a homozygous recessive parent