cbse sample paper class 9 – Discussion Forum

Forgot Password

Lost your password? Please enter your email address. You will receive a link and will create a new password via email.

You must login to ask question.

Search

Ask A Question

Ayushree

Asked: October 9, 2025In: Class 10 Science

In a genetic experiment, plants with pure round green seeds (RRyy) were crossed with plants with wrinkled yellow seeds (rrYY). (i) Show the gametes formed when F1 was self-pollinated. (ii) A total of 144 seeds were produced which developed into saplings. Show the ratio in which these traits are independently inherited in these 144 saplings.

Cross: RRyy × rrYY → F₁: RrYy (round yellow). On self-pollination, F₂ shows 9:3:3:1 ratio (round yellow : round green : wrinkled yellow : wrinkled green) due to independent assortment of genes. cbse sample paper 2026 cbse sample paper 2025-26 class 10