A cross was carried out between a pure red tall pea plant and the pure breed of the plant and F1 progeny was obtained. Later, the F1 progeny was self to obtain F2 progeny. Answer the following questions:
1. What is the phenotype of the F1 progeny and why?
2. Give the phenotypic ratio of the F2 progeny.
3. Why is the F2 progeny different from the F1 progeny?
Answers
(a) 75% of the plants of F2 generation appear tall while 25% appear short
(b) Phenotypic ratio- 3:1 That is Tall : Short
Genotypic Ratio- 1:2:1 That is, Homozygous tall: Heterozygous tall: Homozygous recessive
(c) We can see Short pea plants in F2 generation and not F1 generation. Since the cross is between two homozygous tall and short plants, the F1 generation shows dominant trait while the recessive trait gets suppressed. When the F1 tall pea plant is selfed, the short trait gets expressed.
1)75% of the plants of F1 generation appears tall while 25% appears short.
2)penotype ratio of F2 progeny is 3:1.
3)in F1 only tall plant will appear but in F2 both tall and one part is short.
F1 progeny shows only tall dominent but in F2 recessive also shown.
F1 progeny is formed by breeding of two different physical featured same species.
F2 progeny is formed by breeding of progenies of F1 generation.
✌✌✌