A tall pea plant with round seeds (TTRR) is crossed with a short pea plant with wrinkled seeds (ttrr). The F₁ generation will be:
The correct answer is [D] 100% tall with round seeds.
Here, tallness (T) and round seeds (R) are dominant traits. Crossing TTRR with ttrr gives all F₁ offspring as TtRr, which are tall and round since dominant characters express themselves.
class 10 science sample paper 2026,
CBSE Sample Paper Class 10 Science 2025-26,
Share
ANSWER: [D]
Explanation: The correct answer is [D] 100% tall with round seeds.
Genotype of parents → TTRR × ttrr. F₁ offsprings get one dominant allele from tall-round parent and one recessive from short-wrinkled.
So all F₁ = TtRr (tall and round), showing dominant traits.