Question

A double heterozygous tall plant with yellow colour (colour of cotyledon) is selfed, the ratio of dwarf plants with green cotyledon is

• A. $\frac{1}{16}$
• B. $\frac{1}{4}$
• C. $\frac{1}{6}$
• D. $\frac{2}{16}$

Answer 1

The correct option is A $\frac{1}{16}$

In F${}_2$ generation, out of the 16 individuals obtained, there will be 2 homozygous dominant and recessive allelic individuals. Thus, the ratio of homozygous dominant and recessive to heterozygous is ---> 2:14
Ratio of individual having both dominant and recessive alleles in homozygous condition is 1:16