Question

Genes A and B are known to follow simple Mendelian inheritance. These two genes determine different characters. If two heterozygous plants for both characters are crossed, the phenotypic ratio of their offspring will be:

Select one:

a. 3:1

b. 1:2:1

c. All of the above are possible

d. 9:3:3:1

e. 7:4

Answer 1

Answer- option d 9:3:3:1

Phenotypic ratio= D-D : D-R : R-D : R-R

=9 : 3 : 3 : 1

D-D= dominant-dominant phenotype

D-R =dominant-recessive phenotype

R-D=recessive-dominant phenotype

R-R=recessive-recessive phenotype

Hope you got it.

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