Question

Which of the following conclusions can be made by studying a histogram?

(a) Extreme phenotypes are common

(b) Intermediate phenotypes are more frequent

(c) Intermediate phenotypes are rare

(d) All phenotypes are present in equal amounts

I have been asked this question in semester exam.

I'm obligated to ask this question of Polygenic Inheritance topic in portion Principles of Inheritance and Variation of Biology – Class 12

Answer 1

The correct answer is (b) Intermediate phenotypes are more frequent

Explanation: We can draw two conclusions by studying a histogram. These are that in a polygenic inheritance, the extreme phenotypes are rare and the intermediate ones are more frequent.