_____ is defined as the percentage of cases in which both members of a pair of twins show the trait when it is known that at least one member shows it.
A)Concordance
B)Discordance
C)Epistasis
D)Accordance
E)Monozygocity

Question

Quizplus · Accepted Answer

Concordance refers to the percentage of cases in which both members of a pair of twins show the trait when it is known that at least one member shows it. Therefore, choice A is the correct answer. Discordance refers to the opposite, where only one twin shows the trait. Epistasis refers to the interaction between genes that can affect the expression of a trait. Accordance is not a relevant term in genetics. Monozygocity refers to twins who develop from a single fertilized egg and are genetically identical.

_____ Is Defined as the Percentage of Cases in Which