Question

When a red flowered homozygous pea plant is crossed with a homozygous white-flowered plant. What colour is produced in $F_1$ generation?

• A. Red
• B. White
• C. Pink
• D. Red and white

Answer 1

The correct option is A Red

The genotype of the red-flowered homozygous pea plant: RR

The genotype of the white-flowered homozygous pea plant: rr

Parents: RR X rr

F${}_1$ generation: Rr (Red flower)

The pea plant shows complete dominance in which the dominant allele R masks the expression of the recessive allele r. So, all the plants will have red coloured flowers.

Thus, the correct answer is option A.