parakeets (Melanopsittacus undulatus) come in many colors. These birds may produce zero, one, or two types of pigment in their feathers: a blue pigment and a yellow pigment. Production of each pigment is due to one gene with two alleles. Blue pigment is dominant to no blue pigment, and yellow pigment is dominant to no yellow pigment. These two pigment genes are not linked. A parakeet that produces both blue and yellow pigment has green feathers. A parakeet that produces neither blue nor yellow has white feathers. Suppose you cross a homozygous green bird with a homozygous blue bird: Indicate the F1 genotypes and phenotypes. (5 pts) You set up a cross with a green-feathered F1 bird and a white-feathered bird. What is the probability of having an F2 bird with green feathers?

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.