Question

Which of the following is the representation of a dominant trait?

(a) Widow’s peak

(b) Tongue non-roller’s

(c) Fused ear lobes

(d) Tay-Sachs disease

I got this question in unit test.

I would like to ask this question from Inheritance and Variation Principles in chapter Principles of Inheritance and Variation of Biology – Class 12

Answer 1

The correct choice is (a) Widow’s peak

The best explanation: Widow’s peak is an example of a dominant trait. Other dominant traits include tongue rollers, morphan syndrome, free ear lobes, etc. Some recessive traits are tongue non-roller’s, Duchenne muscular dystrophy, Lesch-Nyhan syndrome, fused ear lobes, Tay- Sachs disease, etc.