CBSE 2022 · Region 2 · Set 2 · Q15

Mendel blended his knowledge of Science and mathematics to keep the count of the individuals exhibiting a particular trait in each generation. He observed a number of contrasting visible characters controlled in pea plants in a field. He conducted many experiments to arrive at the laws of inheritance.

(a)

If only one pair of contrasting characters like tall and short plants is taken, plants obtained in F1 generation are not of medium height. Why ?

(b)

Name the recessive traits in above case.

(c)

Mention the type of the new combinations of plants obtained in F2 progeny along with their ratio, if F1 progeny was allowed to self pollinate. \[\]

(c)

OR If $\displaystyle 1600$ plants were obtained in F2 progeny, write the number of plants having traits :

(i)

Tall with round seeds

(ii)

Short with wrinkled seeds Write the conclusion of the above experiment.