Genetics Review

Front

What does TT represent to geneticists?

Back

Two dominant alleles.

Front

Which of the following is NOT true of a trait?

Back

A trait is given to you by your environment.

Front

What is a trait that can be learned or changed depending on an organism's interaction with its environment?

Back

Acquired trait.

Front

What is a segment of DNA molecule that gives instructions for making a protein?

Back

Gene.

Front

If both copies of a gene have the same allele, what is the term used to describe that individual?

Back

Homozygous.

Front

What is the term for the observable characteristics of an organism?

Back

Phenotype.

Front

What do we call the genetic makeup of an organism?

Back

Genotype.

Front

What is the difference between dominant and recessive alleles?

Back

Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express their trait.

Front

What is the term for an allele that masks the effect of another allele?

Back

Dominant allele.

Front

What is the term for an allele that is masked by a dominant allele?

Back

Recessive allele.