Gene Interactions

Question 1

Co - Dominance

Answer 1

neither allele is completely dominant to the other. Both alleles are shown at the same time in the phenotype.

Question 2

Epistatic Effects

Answer 2

where one gene affects the expression of another gene

Question 3

Sex - Linkage

Answer 3

When genes are carried on the sex chromosomes

Question 4

Sex - Influenced

Answer 4

the phenotype depends on the gender of the animal even though the gene controlling that characteristic is not on the sex chromosome but is influenced by the sex hormones

Question 5

Multiple Alleles

Answer 5

Where three or more alternative alleles of a single gene are possible

Question 6

Lethal Alleles

Answer 6

these lead to death in the animals that have them, they can be recessive, dominant, or show other interactions

Question 7

Incomplete Dominance

Answer 7

neither allele is completely dominant to the other. this produces a new phenotype where the heterozygous animal will look different to both homozygous animals.