Mendel crossed a pea plant having inflated green pod with a constricted yellow pod
a. what type of cross was it?
b. what type of plants are obtained in F1 generation?
c. In F2 generation the phenotype ratio is 9 : 3 : 3 : 1. State the rule for inheritance of traits as observed by Mendel.
Answers
There are only two types of genes that you will find in the pea plant, one is known as the recessive gene which refers to the short one while the other is the dominant gene and refers to the tall one.
So according to the question that will be no recessive genes but all will be the dominant ones and that is the tall one.
Explanation:
(a) The inflated and green pod are dominant traits while as constricted and yellow pod are recessive traits.
Suppose inflated pod is represented by 'I' and constricted pod by 'i'. Similarly green pod is represented by 'G' and yellow pod by 'g'.
The cross between two homozygous parents (IIGG and iigg)
It was dihybrid cross.
(b) all pea plants with inflated green pods are obtained in F1 generation.
(c) According to Mendel's law of inheritance: In the inheritance of more than one pair of traits in a cross simultaneously, the factors responsible for each pair of traits are distributed independently to the gametes.
Hope this will help you.