AP Biology Chapter 14 Genetics

Mendel called the distinct heritable features

• alleles

• chromosomes

• characters

• traits

In peas, tall plants are dominant over dwarf. Mendel crossed two pea plants that are tall and studied the offspring. Of the 100 offspring, 78 were tall and 22 are dwarf. What were the genotypes of the parents?

• TTXTt

• ttXTT

• TtXtt

• TtXTt

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In peas, tall plants are dominant over dwarf. Mendel crossed two pea plants that are tall and studied the offspring. Of the 100 offspring, 78 were tall and 22 are dwarf. What were the genotypes of the tall plants from the cross?

• TT only

• Tt only

• TT and Tt

• There is not enough information to know for sure.

Tags

NGSS.HS-LS3-1

Alternative versions of genes are called

• alleles

• traits

• characters

• chromosomes

Tags

NGSS.HS-LS3-2

States that the two alleles for a heritable character separate (segregate) during gamete formation and end up in different gametes.

• Law of Loci

• Law of Dominance

• Law of Segregation

• Law of Independent Assortment

In peas, purple flowers are dominant over white flowers. If a heterozygous purple pea plant is crossed with a white flower, what portion of the offspring would be expected to be white?

• 0%

• 25%

• 50%

• 75%

• 100%

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NGSS.HS-LS3-1

States that each pair of alleles segregates independently of each other pair of alleles during gamete formation.

• Law of Dominance

• Law of Segregation

• Law of Loci

• Law of Independent Assortment

Genes located near each other on the same chromosome tend to be _____________.

• Inherited together.

• not inherited together.

• mixed together.

• separated.

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NGSS.HS-LS3-1

Multiplication Rule:

If two parents have the genotypes AAbbCc X aaBbcc, what is the probability of having an offspring with AabbCc?

• 1/4

• 1/16

• 1/32

• All of them.

Tags

NGSS.HS-LS3-3

The phenotype of F1 hybrids is somewhere between the phenotypes of the two parental varieties.

• incomplete dominance

• codominance

• complete dominance

• multiple alleles