Question

1 A) How does epistasis differ from Mendel’s principle of dominance?

1 B) A woman who owned a purebred albino poodle (an autosomal recessive phenotype) wanted white puppies; so she took the dog to a breeder, who said he would mate the female with an albino stud male, also from a pure stock. When six puppies were born, all of them were black; so the woman sued the breeder, claiming that he replaced the stud male with a black dog, giving her six unwanted puppies. You are called in as an expert witness, and the defense asks you if it is possible to produce black offspring from two pure-breeding recessive albino parents. What testimony do you give?

Answer 1

Answer= difference between epistasis and Mendel’s principle of dominance

Dominance	Epistasis
1.It refers to a phenomenon of genetics whereby,in an individual containing two allelic forms of a particular gene,one is expressed to the exclusion of the others.	Epistasis refers to the phenomenon where the expression of one affects the inheritance of one or more independently inherited genes.
2.A type of interaction between alleles of different genes.	2.A type of interaction between alleles of the same gene.
3.There are 3 types: Complete dominance ,inComplete dominance and co-Complete dominance.	3.There are six types: dominant epistasis, dominant inhibitory epistasis,duplicate  dominant epistasis, duplicate  recessive epistasis,polymeric gene interaction and recessive epistasis.
4.for example- Mendelian inheritance of the flower color of the pea plant.	4.For example- Coat color of the young Labrador retrievers.