Question

2. Lisa breeds snakes. She bred a solid brown male python with a tan female python whose body was covered with a black diamond pattern. Upon hatching, all of the baby pythons were brown with a faint diamond pattern. Which of the following inheritance patterns most likely determined the color of Lisa's baby pythons?
A incomplete dominance
B codominance
C autosomal dominant-recessive
D sex-linked

Answer 1

A, incomplete dominance

Answer 2

Answer:

The correct answer is option A "incomplete dominance".

Explanation:

In this example, after making a cross-breeding between two different snakes, all the baby pythons were brown with a faint diamond pattern. This phenotype is different of the phenotype of the two parents (a solid brown male python, and a tan black diamond female), and corresponds to an intermediate phenotype between them. This a characteristic inheritance pattern as of incomplete dominance, at which no allele is completely expressed over the other resulting in the offspring having a third intermediate phenotype.