Question

(A) why is the f1 progeny always of tall plants when a tall pea plant is crossed with a short pea plant? (B) how is f2 progeny obtained by self pollination of f1 progeny different from f1 progeny give reason? (C) state a conclusion that can be drawn on the basis of this observation.
plzz solve it three question plzz

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Answer 1

Answer:

A.Because in f1 generation it's sufficient to be tall if it has single tall character. so in f1 generation all are tall pea plants.

B.In f1 progeny it contains both the tall and short character .so by self pollination it obtain f2 progeny.

C.From these observations we conclude that in f1 generation all plants are tall because to be tall plant a single tall character will be sufficient. but in f2 generation one third of the progeny will be tall

Answer 2

Answer:

When a tall pea plant is crossed with a short pea plant, the resultant progeny is always tall because tall is dominant trait and short is recessive trait. Therefore, dominant trait expresses itself in the progeny.