Genetics Unit Test

phenotypes that is a blend of the heterozygous gene pair

• incomplete dominance

• multiple alleles

• regulatory genes

phenotypes that shows both traits

• semi-dominant

• heterozygous

• codominance

the physical look of a trait

• phenotype

• genotype

• recessive

shows even if only one parent passes on the gene

• recessive

• regulatory gene

• dominant

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is this?

• Pedigree

• Karyotype

• Venn diagram

• Punnett Square

Tags

NGSS.HS-LS3-1

In the pedigree that is shown, which represents Irene's allele combination?

• X^hX^h

• X^HX^h

• X^HX^H

• X^hY

Tags

NGSS.HS-LS3-1

The results of Thomas Hunt Morgan’s last cross are shown in the Punnett square below.
Which of Thomas Hunt Morgan's hypotheses was valid based on these results?

• White eyes are lethal in female Drosophila.

• White eyes are lethal in male Drosophila.

• Female Drosophila with white eyes are homozygous recessive.

• White eyes are the dominant trait in female Drosophila.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

In peas, yellow seed color (Y) is dominant to green seed color (y). Which describes an organism that has nonidentical alleles for seed color?

• yy and has green seeds

• Yy and has yellow seeds

• YY and has yellow seeds

• Yy and has green seeds

A purebred plant that has yellow flowers is crossed with a purebred plant that has white flowers. All the offspring have yellow flowers. Which conclusion about yellow flowers is supported by these results?

• Yellow flower color is a dominant trait.

• Yellow flower color is a recessive trait.

• Yellow flower color is a heterozygous trait.

• Yellow flower color is a monohybrid trait.

Tags

NGSS.HS-LS3-1

In peas, yellow seed color (Y) is dominant to green seed color (y). A homozygous green pea plant is crossed with a heterozygous yellow pea plant. What is the predicted phenotypic ratio of the offspring?

• 50 percent yellow, 50 percent green

• 50 percent Yy, 50 percent yy

• 100 percent yellow, 0 percent green

• 100 percent Yy, 0 percent yy

Tags

NGSS.HS-LS3-1