Elevate Biology Unit 8: Mid-Unit Review & Assessment

Front

What is a sex-linked trait?

Back

A trait that is associated with a gene located on a sex chromosome, often the X chromosome.

Front

What does it mean if a trait is codominant?

Back

Both alleles in a heterozygous individual contribute to the phenotype, resulting in a phenotype that shows both traits.

Front

What is the genotype of a homozygous dominant organism?

Back

An organism with two identical dominant alleles for a trait (e.g., AA).

Front

What is the genotype of a homozygous recessive organism?

Back

An organism with two identical recessive alleles for a trait (e.g., aa).

Front

What is a heterozygous genotype?

Back

An organism with two different alleles for a trait (e.g., Aa).

Front

What are genes?

Back

Segments of DNA that code for proteins and determine traits.

Front

What is the difference between dominant and recessive alleles?

Back

A dominant allele masks the effect of a recessive allele in a heterozygous genotype.

Front

What is incomplete dominance?

Back

A form of inheritance where the phenotype of the heterozygote is intermediate between the phenotypes of the two homozygotes.

Front

Can a parent with type AB blood have offspring with type O blood?

Back

No, because AB parents do not have O alleles to pass on.

Front

What is polygenic inheritance?

Back

A type of inheritance where multiple genes influence a single trait.