How do Mendel’s experiments show t | Class 10 Science Chapter Heredity and Evolution, Heredity and Evolution NCERT Solutions

Question:

How do Mendel’s experiments show that traits are inherited independently?

Answer:

Mendel gave the law of independent assortment from the dihybrid cross.

Mendel performed an experiment in which he made crosses of pea plant with the round yellow seeds and one with the wrinkled   green seeds. And in the F1 progeny, round yellow seeds are dominant over the wrinkled green seeds. And in the F2 generation outcome, he saw all the characters are inherited independently by the use of punnett square that helps to demonstrate the possible combinations of the gametes in F2 progeny. Those independently inherited combinations were round yellow, round green, wrinkled yellow and wrinkled green as shown below :

seed circle

This punnet square is showing the 16 possible combination of gametes with the phenotypic ratio 9:3:3:1 and 1:2:1:2:4:2:1:2:1 genotypic ratio in F2 generation. Every pair is showing the different characters, showing independent assortment.


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Welcome to the NCERT Solutions for Class 10 Science - Chapter . This page offers a step-by-step solution to the specific question from Excercise 2 , Question 2: How do Mendel’s experiments show that traits are inherited independently?....