AP Biology: Unit 5 Review

If a person has the sex chromosomes XY they will develop as....

• male

• female

The D gene controls pea plant height. DD plants are tall and dd plants are dwarf. What is the relationship between D and d?

• They are two different plant chromosomes.

• They are alleles of the same gene.

• They are two possible homozygous genotypes.

• They are two possible heterozygous genotypes.

Tags

NGSS.HS-LS3-2

This event takes places during meiosis and leads to genetic diversity.

• DNA replication

• gene mixing

• crossing over of homologous chromsomes

• division of the cytoplasm

Tags

NGSS.HS-LS3-2

Crossing red flowering snapdragons with white flowering snapdragons yields seed that grow into snapdragons with pink flowers. This is an example of

• incomplete dominance

• codomainance

• simple dominance

• epistasis

Which genotype(s) would result in an individual with the recessive phenotype?

• aa

• Aa

• AA

• AA and Aa

Tags

NGSS.HS-LS3-1

Cystic fibrosis (CF) is caused by a recessive allele. A child has CF, even though neither of his parents has CF. What can you conclude about the parents?

• One is homozygous and one is heterozygous.

• Both are homozygous.

• Both are heterozygous.

• The child must have been adopted.

Tags

NGSS.HS-LS3-1

A heterozygous parent is crossed with a homozygous recessive parent. What percentage of the offpsring will show the recessive phenotype?

• 25%

• 100%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

A female and a male, both with genotype EeWw have a child. What is the probability the child will be eeww?

• 3/16

• 9/16

• 1/8

• 1/16

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In the individual with genotype AaBB, what percent of gametes will contain the A allele?

• 50%

• 25%

• 100%

• 0%

Tags

NGSS.HS-LS3-3

Hemophila is a recessive, sex-linked trait. If a female who is a carrier for the hemophilia gene has a child with a male who does not have hemophilia, which prediction is correct?

• All of the sons will have hemophilia.

• All of the daughters will have hemophilia.

• Half of the sons will have hemophilia.

• Half of the daughters will have hemophilia.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-3