Genetics Practice

What allele combination should go in the missing box?

• AA
• Aa
• aa
• none of these

Which of the following is homozygous recessive?

• Tt
• tt
• TT
• T

The ____ is the physical appearance of an organism.

• genotype

• phenotype

Which of the following is an example of phenotype?

• bb
• blue eyes

Which of the following genotypes are purebred?

• Pf
• Pp
• PP
• pP

What type of inheritance do two alleles have if their traits blend together? 

• Incomplete Dominance
• Co-Dominance

This is an example of ___________.

•  Incomplete Dominance
•  Codominance

If you cross a black chicken with a white chicken, only checkered chickens would be produced.  What kind of inheritance pattern does this follow?

• incomplete Dominance
• Co-Dominance

In chickens, feather color is codominant.  If a black chicken BB is mated with one that is black and white (BW) what are the chances of having a chicken that is black and white?

• 50%
• 0%
• 25%
• 100%

A black male and white female produced this grey offspring:

• Incomplete dominance

• Codominance

• Complete dominance