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In garden peas, tall stem (T) is dominant over short stem (t), green pods (G) are dominant over yellow pods (g), and smooth seeds (S) are dominant over wrinkled seeds (s). Suppose a homozygous short, green, wrinkled pea plant is crossed with a homozygous tall, yellow, smooth one.



a) What will be the appearance of the F1 generation?


b) If the F1 plants are interbred, what will be the appearance of the F2 generation?


c) What will be the appearance of the offspring of a cross of the F1 back to the short, green, wrinkled parent?


d) What will be the appearance of the offspring of a cross of the F1 back to the tall, yellow, smooth parent?

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Answer:

In garden peas, tall stem (T) is dominant over short stem (t), green pods (G) are dominant over yellow pods (g), and smooth seeds (S) are dominant over wrinkled seeds (s). Suppose a homozygous short, green, wrinkled pea plant is crossed with a homozygous tall, yellow, smooth one.

a) What will be the appearance of the F1 generation?

b) If the F1 plants are interbred, what will be the appearance of the F2 generation?  

c) What will be the appearance of the offspring of a cross of the F1 back to the short, green, wrinkled parent?

d) What will be the appearance of the offspring of a cross of the F1 back to the tall, yellow, smooth parent?

Answer:

ttGGss x TTggSS= TtGgSs, TtGgSs, TtGgSs, and TtGgSs F1 generation

TtGgSs x TtGgSs= TTGGSS, TtGgSs, TtGgSs, ttggss F2 generation

All offspring in F1 generation are tall, green and smooth

The appearance of of the offspring cross with f1 generation results into 3 tall, green and smooth while 1 is short, yellow and wrinkled

 

Explanation:

 

Explanation:

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