AP Biology - Concept 8.1 Review

The hypothesis of _______ inheritance proposes that the units of hereditary determinants remain stable, and are not lost, across generations.

• blending

• genotypic

• phenotypic

• particulate

A dog has floppy ears. The nature of the ears is a _______, and the floppy nature of this particular dog’s ears is the _______.

• character; genotype

• character; trait

• genotype; character

• genotype; trait

Which statement about Mendel is false?

• He lived in the 19th century.

• His work was not appreciated during his lifetime.

• He performed crosses with many thousands of plants.

• He thought his work supported the hypothesis of blending inheritance.

Mendel removed the stamens of the plants in most of his crosses to

• increase sample size.

• prevent self-fertilization.

• make sure he was only dealing with one character at a time.

• accelerate the development of the offspring.

The parents of the second filial generation are the _______ generation.

• parental

• secondary parental

• first filial

• third filial

True-breeding dark mice are crossed with true-breeding light mice. The resulting progeny are then crossed with one another. This is an example of a _______ cross.

• dihybrid

• dominant

• test

• monohybrid

A true-breeding strain of tall soybean plants is crossed with a true-breeding strain of short soybean plants. All the offspring are short. Thus, tallness is a _______ trait.

• dominant

• recessive

• genotypic

• monohybrid

A true-breeding strain of tall soybean plants is crossed with a true-breeding strain of short soybean plants. All the offspring are short. These offspring are then crossed with each other to create an F₂ generation. If the height of soybean plants is due to a single gene, then of 200 F₂ plants, _______ should be tall.

• 25

• 50

• 75

• 100

Tags

NGSS.HS-LS3-1

Separation of the alleles of a single gene into different gametes is called

• synapsis

• segregation

• independent assortment

• heterozygous separation

Tags

NGSS.HS-LS3-2

Suppose coat color in a rodent is due to a single gene, with the allele for red fur being dominant to the allele for white fur. In the F₂ generation resulting from a cross between true breeding red rodents and true breeding white rodents, _______ of the rodents should have red fur.

• none

• 25%

• 50%

• 75%

Tags

NGSS.HS-LS3-1