Question

In a monohybrid cross male plants having red coloured flowers were crossed with the females
plants with white coloured flowers. It was seen that in the first generation (Fi) all the offspring
bore red coloured flowers. However, when 56 such plants were self-crossed, it was observed in
the second generation (F2 ) that 39 plants bore red flowers and only 13 had white flowers.
(i) What are the genotypes of F and F2 progeny?
(ii) What inference could be drawn from the above data?
(iii) What would be the genotypic ratio of the progeny if the F, males were crossed with parent
females?​

Answer 1

1. genotypic ratio of f2 progeny is 3:1.

2. the inference frm above data is that the traits are inherited by both the parents but the trait which is dominant is expressed.

3. when two plants are crossed you get all plants of same character as it is f1 generation, dominant trait will be expressed.

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