In a cross between genotypes showing recessiv | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) Recessive epistasis occurs when the recessive alleles at one locus mask the expression of both alleles at another locus.In a typical dihybrid cros

Vedclass · Accepted Answer

$9:3:4$

Vedclass · Answer

(A) Recessive epistasis occurs when the recessive alleles at one locus mask the expression of both alleles at another locus.In a typical dihybrid cross,the expected $F_2$ ratio is $9:3:3:1$.In recessive epistasis,the double recessive genotype $(aabb)$ and the genotype with one dominant allele at the first locus but recessive at the second $(Aabb)$ produce the same phenotype.Thus,the ratio $9:3:3:1$ is modified to $9:3:(3+1)$,which equals $9:3:4$.

In a cross between genotypes showing recessive epistasis,the $F_2$ phenotypic ratio will be .....

Similar Questions

The physical characteristics of an organism can be observed through its:

The science which links heredity with environments is known as:

$A$ doctor's son:

In a complementary gene interaction,calculate the number of phenotypes and genotypes produced in a cross $AaBb \times aaBB$.

Which one of the following symbols and its representation,used in human pedigree analysis,is correct?

Vedclass Test Series

Exam Paper Generator

Online Exam Module