Unit 8.5 Quiz 7

The purpose of selective breeding is to produce:

• bigger animals.

• smaller animals.

• animals with desirable traits.

• animals with bad traits.

Which term describes an allele that masks the expression of another allele when present in the genotype?

• dominant

• co-dominant

• incompletely dominant

• recessive

Two plants are crossed: one with genotype RR (red) and another with genotype rr (white). All offspring have genotype Rr. R is dominant, and r is recessive. What can be concluded about the color of the offspring?

• They will be red.

• They will be pink.

• They will be white.

• Half will be red and half will be white.

• They will be red with white speckles.

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NGSS.HS-LS3-1

In a breeding program, a bull with genotype EE is mated with a cow with genotype ee. What is the probability that their offspring will have the genotype ee?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

NGSS.HS-LS3-3

Co-dominance differs from incomplete dominance in that:

• co-dominance shows a blending of traits, while incomplete dominance shows clear dominance.

• co-dominance results in a heterozygous phenotype distinct from either homozygous phenotype.

• co-dominance results in a 3:1 phenotypic ratio, while incomplete dominance results in a 1:2:1 ratio.

• co-dominance involves multiple alleles, while incomplete dominance involves only two alleles.

Which of the following is an example of artificial selection?

• Wild wolves evolving into domestic dogs through natural environmental pressures.

• A population of birds developing different beak shapes due to natural food sources.

• A mutation causing antibiotic resistance in bacteria.

• Breeding only dairy cows that produce high milk yields.

A farmer has bred only his cattle with extra big muscles to produce cattle with extra big muscles. What is this an example of?

• Punnett squares

• pedigree charts

• natural selection

• artificial selection

Which statement about DNA is correct?

• A child's DNA will show similarities to both the mother's and father's DNA.

• A child's DNA will be unrelated to the mother's or father's DNA.

• A female child's DNA will exactly match the mother's DNA.

• A male child's DNA will exactly match the father's DNA.

Tags

NGSS.HS-LS3-1