Topic 5.3 - 5.6 Review: Heredity (AP Biology)

"True-breeding" individuals have a ____ gentoype.

• Homozygous

• Heterozygous

According to the rules of Mendelian inheritance, a heterozygous individual will have the ____ phenotype.

• Dominant

• Intermediate

• Recessive

Which law of Mendelian inheritance states that the two alleles of a genotype will separate into different haploid cells during meiosis?

• Law of Independent Assortment

• Rule of Dominance

• Law of Segregation

• Rule of Inheritance

In pea plants, purple flowers are dominant and white flowers are recessive. Suppose two purple-flowered parents produce 100 offspring. 27 of those offspring have white flowers. What are the genotypes of the parents?

• PP x Pp

• Pp x Pp

• PP x PP

• PP x pp

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

In pea plants, yellow seeds are dominant over green seeds. A true-breeding yellow-seeded plant is crossed with a true-breeding green-seeded plant. What would be the expected phenotypes in the offspring?

• 100% green seeds

• 75% yellow seeds, 25% green seeds

• 50% yellow seeds, 50% green seeds

• 100% yellow seeds

Tags

NGSS.HS-LS3-1

In pea plants, yellow seeds are dominant over green seeds, and round seeds are dominant over wrinkled seeds. A pea plant with yellow, round seeds is crossed with a pea plant with green, round seeds. They have 1000 offspring. All of them have round seeds, and approximately 1/2 of them have yellow seeds. What are the most likely genotypes of the parents?

• YyRr x YyRr

• YyRR x yyRr

• YyRr x YYRr

• YyRr x yyRr

Tags

NGSS.HS-LS3-1

In pea plants, yellow seeds are dominant over green seeds, and round seeds are dominant over wrinkled seeds. A true-breeding plant with green, wrinkled seeds is crossed with a heterozygous plant with yellow, round seeds. What are the expected phenotype probabilities in their offspring?

• 100% yellow, round offspring

• 9/16 yellow round

  3/16 yellow wrink.

  3/16 green round

  1/6 green wrink.

• 25% of each phenotype combination

• 50% yellow, round offspring & 50% green, wrinkled offspring

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

In pea plants, tallness is dominant over shortness, and purple flowers are dominant over white flowers. A heterozygous tall plant with white flowers is crossed with a heterozygous tall plant that is true-bred for purple flowers. What is the probability that these plants would produce short offspring with white flowers?

• 0%

• 25%

• 50%

• 75%

• 100%

Tags

NGSS.HS-LS3-2

NGSS.HS-LS3-1

NGSS.HS-LS3-3

In snails, shell color is determined by one gene. One version of this gene produce dark shells, and one produces light shells. Individuals that inherit one of each allele have striped shells. This represents an example of ____.

• Incomplete dominance

• Codominance

• Multiple alleles

• Polygenic inheritance

In a species of mouse, several genes contribute to the mouse's fur color. Dominant alleles for these genes usually contribute to darker fur; therefore, the more dominant alleles a mouse inherits, the darker its fur will be. This represents an example of ____.

• Incomplete dominance

• Codominance

• Multiple alleles

• Polygenic inheritance