Georgie and Lennie are identical twins. Which of the following is true of their genetic makeup?
A) They have identical genotypes and identical phenotypes.
B) They have identical genotypes but not identical phenotypes.
C) They have identical phenotypes but not identical genotypes.
D) They have neither identical phenotypes nor identical genotypes.

Question

Quizplus · Accepted Answer

Identical twins like Georgie and Lennie have identical genotypes because they come from the same fertilized egg that split into two. However, their phenotypes, which are influenced by both their genetics and environmental factors, may not be identical. Differences in environment, experiences, and random biological processes can lead to variations in their physical appearance, health, and other traits.

Georgie and Lennie Are Identical Twins