Question

If a heterozygous tall plant is crossed with a homozygous dwarf plant, the percentage of progeny having dwarf character is:

• A. 0
• B. 25
• C. 50
• D. 100

Hint:

In a monohybrid cross where one parent is heterozygous and the other is homozygous recessive, 50% of the offspring will inherit the recessive trait.

Answer 1

The Correct Option is C

The given cross is between a heterozygous tall plant (Tt) and a homozygous dwarf plant (tt). The genetic cross is represented as: \[ \text{Tt} \times \text{tt} \] The possible offspring from this cross can be determined by a Punnett square: | | T | t | |-------|----|----| | t | Tt | tt | | t | Tt | tt | From the Punnett square:
- 50\% of the progeny will be Tt (tall), and
- 50\% of the progeny will be tt (dwarf). Thus, the percentage of progeny having the dwarf character (tt) is 50%.