Genetics of Chicken Feather Color

The video tutorial introduces chicken genetics, explaining dominant, recessive, and codominant genes. It discusses the black and splash feather genes, using Punnett squares to predict breeding outcomes. The lavender gene is highlighted as a recessive trait, and breeding strategies are explored, including using tools like the chicken calculator.

What is the relationship between the ROS comb gene and the single comb gene?

• Both genes are recessive.

• Both genes are codominant.

• The ROS comb gene is dominant over the single comb gene.

• The ROS comb gene is recessive to the single comb gene.

What color are the feathers of a chicken with one black gene and one splash gene?

• Blue

• White

• Splash

• Black

What is the color outcome for a chicken with two capital BL genes?

• Splash

• Black

• Blue

• Lavender

What is the genetic makeup of a purebred chicken?

• Codominant

• Recessive

• Homozygous

• Heterozygous

What is the purpose of a Punnett square in genetics?

• To predict the probability of different genetic outcomes.

• To identify dominant genes.

• To calculate the number of offspring.

• To determine the exact color of a chicken's feathers.

What is the probability of a blue chicken passing on a little BL gene to its offspring?

• 50%

• 100%

• 25%

• 0%

If two blue chickens are bred, what is the probability of their offspring being splash?

• 25%

• 0%

• 75%

• 50%

What is the expected proportion of blue chicks when two blue chickens are bred?

• 50%

• 25%

• 75%

• 100%

How does the lavender gene differ from the blue, black, and splash genes?

• It is a dominant gene.

• It is a codominant gene.

• It is unrelated to feather color.

• It is a recessive gene.

What is the effect of the lavender gene on feather color?

• It has no effect on feather color.

• It darkens the feathers.

• It dilutes the usual black or red color.

• It makes the feathers shiny.