Genetics Review Lesson

Genetics Review Lesson

Multiple Choice

When sex cells combine to produce offspring, what will each sex cell contribute to the offspring?

• one fourth of the normal number of chromosomes.

• half the normal number of chromosomes.

• the normal number of chromosomes.

• twice the normal number of chromosomes.

Multiple Choice

What is an organisms genotype?

• genetic makeup

• feather color

• physical appearance

• stem height

Multiple Choice

What is an organisms phenotype?

• genetic makeup

• feather color

• physical appearance

• BB or Bb

Multiple Choice

In a plant, tall (T) is the dominant allele. Short (t) is the recessive allele. Which genotype would a short offspring have?

• tT

• tt

• Tt

• TT

Multiple Choice

A person with type B blood was crossed with a person with type A blood. Their offspring had type AB blood. This is an example of which of the following?

• co-dominance

• recessive dominance

• incomplete dominance

• dominant

Multiple Choice

A red flower is crossed with a white flower that results in a pink flower. This is an example of which of the following?

• co-dominance

• recessive dominance

• incomplete dominance

• dominant

Multiple Choice

If the genotype of one parent is GG and the genotype of the other is gg, what is the probability that an offspring will have a Gg genotpe?

• 0:4

• 1:4

• 75%

• 100%