Question

A cross is carried between pure bred tall pea tree plant and pure bred dwarf tree plant


1. what is the phenotype of F1 progeny and why?
2. what is the phenotype of F2 progeny when F is selfed​

Answer 1

Answer:

 A cross was carried out between a pure bred tall pea plant and a pure bred dwarf pea plant and F1 progeny was obtained. A cross was carried out between a pure bred tall pea plant and a pure bred dwarf pea plant and F1 progeny was obtained. Later, the F1 progeny was salted to obtain F2 progeny.

Explanation:

Ans1- i) The phenotype of F1 progeny will be All plants with round shaped and yellow coloured seeds due to the presence of dominant alleles for round shaped and yellow colour.

Ans2- In the resulting F2 generation, 3/4 showed the dominant phenotype, and 1/4 showed the recessive phenotype. For example, when a round seed line was crossed to a wrinkled seed line, the F1 generation was all round, and the F2 generation showed a phenotypic ratio of 3 round : 1 wrinkled.