Meiosis and Genetics Practice Test

A student observes several slides with different cell types under a microscope.

Slide 1: Liver cell of a mouse

Slide 2: Sperm cell of a human

Slide 3: Skin cells of a human

Slide 4: Egg cells of a mouse

Which pair of slides contains cells that resulted from meiosis?

• 1 and 3

• 2 and 4

• 2 and 3

• 1 and 4

Tags

NGSS.HS-LS3-2

The law of segregation predicts which phenomenon during gamete formation?

• Two dominant alleles placed adjacently in the parent’s genome will pass on to different gametes.

• Dominant alleles will be passed on to gametes slightly more than half of the time.

• When both recessive and dominant alleles for a trait are present in the parent, both will be passed on to the same gamete.

• A single random allele from each pair of parent alleles will be passed on to the gamete.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Chickens can have different types of feathers. Frizzled feathers curl toward a chicken’s head. Assume that feather type is determined by a single gene and that the allele for frizzled feathers is dominant over the allele for straight feathers. In a cross between two chickens with straight feathers, what percentage of the offspring can be expected to have frizzled feathers?

• 0%

• 25%

• 50%

• 100%

Tags

NGSS.HS-LS3-1

In guinea pigs, the allele for a rough coat (R) is dominant for the allele for a smooth coat (r). A heterozygous guinea pig and a homozygous recessive guinea pig are mated. Which of the following lists the distribution of genotypes most likely to be seen in the offspring?

• 100% Rr

• 50% Rr and 50% rr

• 75% Rr and 25% rr

• 25% RR, 50% Rr, and 25% rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In cattle, the allele for short horns (S) is dominant over the allele for long horns (s). Two heterozygous short-horn cattle are bred and produced four offspring. What percentage would you expect to have long horns?

• 100%

• 75%

• 50%

• 25%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

In pea plants, tall plants were crossed with short plants, and all of the offspring were tall. The tall parent plants most likely carry —

• two recessive traits

• two dominant traits

• one trait for tallness and one trait for shortness

• a mutated trait that prevents offspring from being short

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In one breed of dog, short hair is the dominant allele (H) while long hair is the recessive allele (h).

If both parents have short hair and the offspring has long hair, which statement best describes the genetic characteristics of the offspring?

• The offspring received mutated genes from both parents.

• The offspring received one recessive allele from each parent.

• The offspring received one dominant allele from each parent.

• The offspring received a dominant and recessive allele from both parents.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In mice, a certain species displays incomplete dominance in coat coloring. The offspring of a black (BB) mouse and a white (bb) mouse are gray (Bb) mice. A cross between two gray mice will most likely produce offspring with which percent of coat colors?

• 25% black, 75% gray

• 25% gray, 75% white

• 25% white, 25% black, 50% gray

• 25% gray, 25% black, 50% white

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Gregor Mendel cross-pollinated red and white snapdragon flowers. What information indicates that incomplete dominance was achieved?

• The offspring had heterozygous alleles

• The offspring had a recessive allele.

• The offspring were pink.

• The offspring were red.

In guinea pigs, the allele for a rough coat (R) is dominant over the allele for a smooth coat (r). A guinea pig with a rough coat is mated with a guinea pig with a smooth coat. Of the three offspring, 1 has a smooth coat. What is the probability that their next offspring will have a smooth coat?

• 0%

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3