Principles of Heredity

Question 1

Define epistatis

Answer 1

A gene interaction in which the effects of an allele at one gene masks the
effects of another gene’s alleles

Question 2

what is the hypostatic gene?

Answer 2

the gene that is being
masked by the epistatic alelle

Question 3

What is the ratio of additive interactions of two genes controlling one trait?

Answer 3

9:3:3:1

Question 4

What is a novel phenotype?

Answer 4

Unique visual apperance compared to the parents

Question 5

Recessive epistasis ratio in F2

Answer 5

9:3:4 in F2

Question 6

Reciprocal recessive epistasis ratio in F2

Answer 6

F2 ratio 9:7

Question 7

Dominant epistasis ratio in F2

Answer 7

(F2 ratio 12:3:1)

Question 8

What is redundant genes and what is the ratio in F2

Answer 8

15:1 ratio in F2

Question 9

Define pleiotropy

Answer 9

One gene influences several traits.
Multiple effects of a mutation in a single gene on the phenotype of an
organism is called pleiotropy

Question 10

Give and example of pleiotropy and how it works

Answer 10

Sickle-cell anemia, Carriers (heterosygous) are resistant to malaria