Lesson: Chapter 20 — Heredity

20.1. Variation among living things 5 of 6 Reset answers

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Question 5

A person is born with six fingers on one hand. What is this rare inherited characteristic called?

A Syndactyly B Polydactyly C Thalassaemia D Albinism

The right answer is the one marked above.

Polydactyly. It means having more digits than usual on a hand or foot. Syndactyly is two digits joined by skin, which is a different characteristic.

Both are inherited variations rather than illnesses. Rare and unusual are not the same as harmful.

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