3.2 - Non-Mendelian Inheritance Checkpoint Quiz

Which is NOT true regarding polygenic inheritance?

• A trait is controlled by more than one gene.

• There will be many different options for phenotypes for the specific trait.

• Height and hair color are examples of polygenic inheritance.

• Polygenic traits will be one of two options, such as tall or short.

What type of inheritance is shown in this graph?

• polygenic inheritance

• codominance

• incomplete dominance

• gene linkage

Two rats are bred. One rat has long fur and the other has short fur. 100% of the offspring have medium fur. What type of inheritance would this be?

• codominance

• incomplete dominance

• polygenic inheritance

• sex linkage

Pretend that there is a species of fish with 3 different color options. If a true breeding male yellow fish and a true breeding blue female fish are bred and the trait shows incomplete dominance, what color will the offspring be?

• green

• blue and yellow striped

• 100%. males would be yellow and 100% females would be blue

• the fish would vary in color from blue, bluish-green, green, green-ish yellow, and yellow.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

Pretend that there is a species of fish with 3 different color options. If a true breeding male yellow fish and a true breeding blue female fish are bred and the trait shows codominance, what color will the offspring be?

• green

• blue and yellow striped

• 100%. males would be yellow and 100% females would be blue

• the fish would vary in color from blue, bluish-green, green, green-ish yellow, and yellow.

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is true about heterozygotes (Aa) in traits that show codominance? Select all that apply.

• The heterozygote will be an equal mix of both traits.

• The heterozygote will show both traits, but they won't be mixed.

• The heterozygote will have a different phenotype than both homozygotes.

• The heterozygote will show the same phenotype as their parents.

Gene linkage occurs when... (select all that apply).

• The genes for 2 specific traits are located on the same chromosome.

• Organisms are more likely to inherit the exact same combinations of certain traits as their parents

• Phenotypes blend in the heterozygote.

• One gene is not dominant over another.

Which genes are linked, based on the diagram included?

• C

• D

• A

• B

Tags

NGSS.HS-LS3-1

What is the biggest hint that a trait is inherited following sex-linkage?

• One gender (usually males) are impacted significantly more than females.

• There are many different phenotypes for a specific trait.

• One trait cannot overpower another.

• Traits equally impact both sexes.

What is the reason for the pattern observed in sex-linkage?

• Males have an X and a Y chromosome and females have two Xs.

• Males and females have the same combination of sex chromosomes.

• Females have more sex chromosomes than males.

• Genes for certain traits are found on the same sex chromosomes.