AP Genetics Review

Which of the following is NOT correct about meiosis?

• Chromosome number is halved

• Creates genetically identical offspring

• Produces egg/sperm cells

• Creates genetic variation

Which of the following types of human cells would be considered haploid, with only 23 total chromosomes?

• Nerve cells

• epithelial cells

• liver cells

• gametes

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Down syndrome and Klinefelters are the result of

• chromosomal inversion

• deletions of genes on chromosomes

• nondisjunction

• insertion of gene on chromosomes

Pea plant were well suited for Mendel's experiments because

• they have many observable traits controlled by single genes

• they exhibit a lot of incomplete dominance

• they have many pleiotropic genes

• they have a unusually long generation times

In snapdragons, heterozygotes for one of the genes have pink flowers, whereas homozygotes have red or white flowers. When plants with red flowers are crossed with plants with white flowers, what proportion of the offspring will have pink flowers?

• 0%

• 25%

• 50%

• 75%

• 100%

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NGSS.HS-LS3-1

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Achondroplasia is a form of dwarfism where a single gene affects several genotypes. This is an example of

• codominance

• polygenic genes

• incomplete dominance

• pleiotropy

The frequency of crossing over between any two linked genes will be which of the following?

• Higher if they are recessive

• Determined by relative dominance

• The same as if they were not linked

• Proportional to the distance between them

If a mother has blood Type A and a father has blood Type B, what are all of the possible blood types that can result in their offspring?

• Types A and B

• Type AB only

• Types A, B, and AB

• Types A, B, AB, and O

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NGSS.HS-LS3-2

Colorblindness is a sex-linked recessive trait. What is the possibility of a girl being a carrier if the father has normal vision and the mother is a carrier?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

For the genotype AaBb, what is the probability of producing a gamete with ab?

• 1/1

• 1/2

• 1/4

• 1/8

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