Review Quiz Chapters 10-11

B represents black feathers and W represents white feathers. When a wren with genotype BB is mated with a wren with genotype WW, all their offspring are grey. What pattern of inheritance best explains why this happened?

• recessiveness

• dominance

• incomplete dominance

• codominance

Brown hair (B) is dominant to blonde hair (b). Cross a homozygous dominant hair colored person with a homozygous recessive hair colored person. What percentage of their children will have brown hair?

• 0%

• 25%

• 50%

• 100%

Hemophilia is a sex-linked condition. If a man with hemophilia has children with a woman who is a carrier, what percentage of their children will have the disorder?

• 0%

• 25%

• 50%

• 100%

In this Punnett square, the two parents are heterozygous for green hair (G) What is the percent probabliity that they will produce offspring who also have green hair?

• 25%

• 50%

• 75%

• 100%

Examine the possible alleles for the four traits shown in the table. What offspring are possible from a cross between individual (Aa) and individual (aa)?

• 100% terminal

• 100% axial

• 75% axial, 25% terminal

• 50% axial, 50% terminal

In a species of mouse, brown fur (B) is dominant over white fur (b). If a heterozygous brown mouse is crossed with a white-colored mouse, what would be true of their possible offspring?

• 75% BB and 25% Bb

• 100% BB

• 50% Bb and 50% bb

• 25% BB, 25% bb, and 50% Bb

Examine the diagram that shows a cross between two green pea plants. Which most accurately describes the plant that has the yellow pea pods (gg)?

• the plant carries two recessive alleles for yellow pod color

• the plant carries a dominant and a recessive allele for yellow pod color

• the plant carries alleles for both green and yellow pod color

• the plant carries two dominant alleles for yellow pod color

Red hair and freckles are often inherited together. Why is this true?

• they are linked genes

• they are dominant

• they are codominant

• they are recessive

Through conducting many experiments with pea plants, Gregor Mendel discovered three basic principles that guide the inheritance of traits. Which concept is a part of his explanation?

• dominance

• codominance

• multiple alleles

• sex linkage

In rats, black coat color (B) is dominant to white coat color (b). When a black rat was crossed with a white rat, some white offspring occurred. What was the genotpye of the black rat?

• B

• bb

• Bb

• BB