In pisum sativum the pods may be inflated (I-dominant) or contricted (i-recessive). What proportion of the offspring in the following crosses would be expected to be inflated

a) II x ii b)ii x ii c)II xII d)Ii x Ii

The proportion of inflated pods in the offsprings will be as follows:

i) II × ii

 ↓

 Ii 

⇒ All dominant, all have inflated pods

ii) ii × ii

 ↓

 ii 

⇒ All recessive, all have constricted pods

iii) Ii × Ii

 ↓

 II : Ii : ii = 1:2:1

⇒ Inflated: constricted = 3:1

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 in a) and c)

it is expected to be inflated.

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