Quiz 4

Which genetic disorder is associated with an irregular shape of the red blood cells?

• sickle-cell disease

• Marfan syndrome

• Huntington disease

• phenylketonuria (PKU)

• cystic fibrosis (CF)

Tags

NGSS.HS-LS3-2

Alleles are

• dominant genes.

• recessive genes.

• two versions of the same gene.

• alternate versions of the same gene.

• sister chromatids.

In a one-trait testcross, a homozygous dominant individual is crossed with a homozygous recessive individual. Which phenotype will be absent in the F1 generation?

• dominant trait.

• negative trait.

• recessive trait.

• heterozygote.

• homozygote.

Which of the following is mismatched?

• A) physical expression of a trait - phenotype

• B) allele that masks expression of alternate allele - dominant

• C) identical alleles - heterozygous

• D) allele whose expression can be masked by an alternate allele - recessive

• E) the specific alleles that an individual has - genotype

What are all possible gametes that can be produced by an individual with the following genotype: FFg?

• FG, Fg

• FF, Gg

• Fg

• FG, Fg, fG, fg

• Fg, rG

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In a dihybrid cross where both parents are heterozygous, the expected phenotypic ratio is:

• 1:2:1

• 9:3:3:1

• 1:1:1:1

• 3:1

• 1:1:1:1:1

Tags

NGSS.HS-LS3-3

Matt breeds and sells snakes. He knows that he can make the most money by breeding and selling albino snakes. Albinism is a recessive trait. His female albino corn snake just produced six offspring. Two displayed normal coloration and four were albino. What do you know about the genotype of the father?

• He must be homozygous dominant.

• He must be heterozygous.

• He must be homozygous recessive.

• He could be either heterozygous or homozygous dominant.

• There is not enough information to determine the father's genotype.

Tags

NGSS.HS-LS3-1

Megan has a widow's peak (dominant trait) and attached earlobes (recessive trait). Megan's dad has a straight hairline and unattached earlobes. What is Megan's genotype?

• WWEE

• WwEE

• wwee

• WwEe

• Wwee

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

A heterozygote for a trait exhibiting incomplete dominance will

• express the dominant trait.

• express the recessive trait.

• exhibit an intermediate phenotype.

• express both alleles.

• exhibit an intermediate genotype.

A woman with type AB blood marries a man who is heterozygous for type B blood. If they have children, what are all the possible blood types for the children?

• AB only

• AB, AA, AO, and BO

• AB, BB, AO, and BO

• BB only

• AA, BB, and AB

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2