The coefficient of relatedness (r) between full siblings is
A) 0.25.
B) 0.5.
C) 0.75.
D) 1.00.

Question

Quizplus · Accepted Answer

Full siblings share on average 50% of their genetic material, so the coefficient of relatedness between them is 0.5. Choice A is incorrect because 0.25 is the coefficient of relatedness between half-siblings (where they share on average 25% of their genetic material). Choice C and D do not apply to full siblings.

The Coefficient of Relatedness (R) Between Full Siblings Is