Respuesta :

Dihybrid crosses

Explanation:

Typical ratios resulting from epistatic interactions in dihybrid crosses would be 9:3:4, 9:7

  • Epistatis is a type of gene interaction in which one gene masks the effect of other gene affecting the same trait but alleleically different
  • 9:3:4 is the recessive epistasis or single gene recessive epistasis ratio where recessive condition of a gene masks the expression of another dominant gene
  • 9:7 is the double recessive epistasis or complementary gene action ratio where two independently assorting non allelic genes interact with each other in such a manner that recessive condition of any of the gene mask the expression of other
  • Complementation is very important in regulation of metabolic pathways as in metabolic pathways all the enzymes are dependent on each other

Answer:

9:3:4,  9:7

Explanation:

Ratios  of epistatic interactions in dihybrid crosses would be 9:3:4, 9:7.

Epistatis is a type of gene interaction in which one gene masks the effect of other gene in heterologous condition.

Epistasis may be dominant or recessive.

9:3:4 is the recessive epistasis ratio where recessive condition of a gene masks the expression of another dominant gene.

 

In case of  the double recessive epistasis, the resulting ratio would be  9:7