Dominance Review

Abigail noticed that one of her pet mice has black fur (B) and the other has white fur (b). She learned in her biology class that black fur is a dominant trait. If she breeds these mice, according to the Punnett square she drew, the offspring in box 4 would:

• have white fur.

• be heterozygous.

• have gray fur.

• be homozygous.

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Ben and Isla, both having freckles (F), which is dominant to not having freckles (f), got married. They have three children, Will, and two others. Will and one of his siblings have freckles while the other sibling does not.

What must be the genotype of Ben and Isla?

• FF

• Ff

• ff

Tags

NGSS.HS-LS3-1

Grace, Nora, and Hannah are studying genetics in their biology class. Grace decides to cross a plant producing wrinkled peas with a plant producing smooth peas in their school garden. Weeks later, they discover that all the offspring plants have smooth peas. Hannah drew the Punnett square to show the genotypes of the offspring plants. What were the genotypes of the parent plants?

• RR and rr

• Rr and Rr

• RR and Rr

• Rr and rr

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

James, Grace, and Arjun are working on a school project about genetics. They discover that the visible characteristics of a plant, like the color of its flowers, is known as a

• mutation

• genotype

• crossing over

• phenotype

Isla's cat, a calico, displays both orange and black fur traits. What type of dominance does this exemplify?

• Incomplete Dominance

• Co-dominance

• Complete dominance

• Mendelian dominance

Evelyn, Anika, and Rohan are biology students who are working on a project about genetics. They visit a botanical garden and notice a flower with a unique color pattern. This color pattern is an example of:

• codominance

• dominance

• incomplete dominance

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Abigail has a long-haired pet cat and James has a short-haired pet cat. When they bred their cats, the kittens had a medium-length coat. What does this represent?

• Incomplete dominance

• Codominance

• Complete dominance

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NGSS.HS-LS3-1

NGSS.HS-LS3-2

Arjun and Grace are working on a school project about genetics. They are trying to figure out how many alleles their classmate Noah might have for a particular trait. Can you assist them?

• 1

• 2

• 3

• 4

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NGSS.HS-LS3-1

Olivia, Avery, and Ava are gardening enthusiasts. They are trying to grow purple flowers in their garden. They have a variety of pea plants and they know that a certain genotype represents a pea plant that is homozygous recessive for purple flowers. Can you help them identify the correct genotype?

• Tt

• tt

• TT

• T

Tags

NGSS.HS-LS3-1

Benjamin, Elijah, and Rohan are working on a farm and they are trying to breed a specific type of corn. They have a chart that predicts the genetic makeup of the offspring, but one box is missing. What combination of genes should go in the missing box?

• AA

• Aa

• aa

• none of these

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2