Genetics Test Review

What % of the offspring in the Punnet square are heterozygous?

• 25%
• 50%
• 75%
• 100%

What is the type of dominance when the two traits aren't dominant over each other, but whose heterozygous outcome is blended?

• co-dominance
• simple dominance
• incomplete dominance
• non-dominance

What is one or more alternative forms of a gene?

• chromosome
• genotype
• phenotype
• allele

Colorblindness is more common in males than in females because

• fathers pass the allele for colorblindness to their sons only.
• the allele for colorblindness is located on the Y chromosome.
• the allele for colorblindness is recessive and located on the X chromosome.
• males who are colorblind have two copies of the allele for colorblindness.

If two parents are heterozygous for type A blood, what is the probability that their offspring would have type O blood?

• 100 %
• 75%
• 50%
• 25%

If a father is AA and a mother is AB, what is the probability for a child with AB blood? 

• 0%
• 25%
• 50%
• 75%

If one of your parents is blood type AO and the other is type BO, which of the following blood types would you likely be?

• O

• AB

• A or B

• Any

 

In Andalusian fowls, black individuals (A) and white individuals (W) are homozygous.

The hybrid offspring are all bluish-gray. This is an example of incomplete dominance. What results if a black individual is crossed with a bluish-gray individual?

• AA: 50%

  AW: 50%

• AA: 25%

  AW: 50%

  WW: 25%

• AA: 100%

• WW: 100%

Which type of inheritance causes both traits to be expressed equally in the heterozygote?

• Complete Dominance
• Incomplete Dominance
• Co-Dominance
• Sex-linked

What type of inheritance pattern is shown here?

• Codominance

• Incomplete dominance