Unit 6 Test Review

Front

What do we use pedigrees for?

Back

To trace traits in families.

Front

What is the best description of Trisomy?

Back

A genetic condition where an individual has three copies of a chromosome instead of the usual two.

Front

What is a gene located on one of the first 44 chromosomes called?

Back

Autosomal.

Front

Which genotype represents a male with normal vision in colorblindness?

Back

X^N Y.

Front

What type of mutation is a Frameshift mutation?

Back

A mutation that shifts the reading frame of the genetic message.

Front

What is the definition of Monosomy?

Back

A genetic condition where there is only one copy of a chromosome instead of the usual two.

Front

What does X-linked mean?

Back

A gene located on the X chromosome.

Front

What is a recessive trait?

Back

A trait that is only expressed when two copies of the gene are present.

Front

What is the definition of a dominant gene?

Back

A gene that expresses its trait even when only one copy is present.

Front

What is Nondisjunction?

Back

The failure of chromosomes to separate properly during cell division.