Dr. Erickson studied a number of monozygotic twins and reports that the heritability of friendliness is -1.35. You do not believe him. Why?
A)The actual heritability is +.90.
B)He should have studied dizygotic twins.
C)He should have studied fraternal twins.
D)He should have studied identical twins.
E)Heritability cannot drop below -1.0.

Question

Quizplus · Accepted Answer

Heritability estimates range from 0 to 1 (or 0% to 100%), where 0 indicates no genetic contribution to a trait's variation within a population, and 1 indicates that all variation is due to genetic differences. A heritability estimate of -1.35 is impossible, as heritability cannot be negative or exceed 1.

Dr Erickson Studied a Number of Monozygotic Twins and Reports