Question
Biology Question on Principles of Inheritance and Variation
Given below is a pedigree chart of a family with five children. It shows the inheritance of attached ear lobes as opposed to the free ones. The squares represent the male individuals and circles the female individuals. Which one of the following conclusions drawn is correct ?
A
The parents are homozygous recessive
B
The trait is Y-linked
C
The parents are homozygous dominant
D
The parents are heterozygous
Answer
The parents are heterozygous
Explanation
Solution
In this pedigree chart of a family with five children, the parents are heterozygous.