19 practice Qs

Spontaneous mutations include

Depurination, deamination, errors in DNA replication

The complete loss of either a guanine or adenine from DNA is an example of

depurination

A temporary change in the conformation of a nitrogenous base is called ______.

tautomeric shift

A heritable change in the genetic material is called a mutation.

true

Silent mutations are possible due to the degenerate nature of the genetic code.

true

The Ames test may be used to determine if an agent is a mutagen

true

What is the difference between a forward and reverse mutation?

A forward mutation changes the wild-type genotype to some new genetic combination, while a reverse mutation changes a genotype to the wild-type genotype.

The wild-type eye color of Drosophila is red. A single-base mutation can occur that produces a white eye color. What statement is correct regarding this mutation?

It is an example of a mutation that alters protein function

A mutagen is

an agent that can alter the structure of DNA and cause mutations

Mutations that change the configuration of a protein at a specific temperature are called ____ mutations.

conditional

A change in the chromosome number is called a point mutation.

false

A mutation in a promoter region that causes the promoter sequence to more closely resemble the consensus sequence is called an up promoter mutation and results in a decrease in transcription.

false

An individual that is a genetic mosaic would be the result of a germ cell mutation.

false