Thurs. 2/23/23

A random error in DNA or RNA is called...

• a mutation

• a transcription

• a translation

• an expression

Answer explanation

A mutation is a random error in DNA or RNA.

A change in one base pair is called...

• a silent mutation

• a point mutation

• a missense mutation

• a nonsense mutation

Answer explanation

A change in one base pair is called a point mutation.

A mutation that results in the "frame" of reading being shifted by one or more base pairs, resulting in completely different codons being translated, is called a...

• silent mutation

• nonsense mutation

• missense mutation

• frameshift mutation

Answer explanation

A mutation that results in the "frame" of reading being shifted by one or more base pairs, resulting in completely different codons being translated, is called a frameshift mutation.

Which of these is true?

• Mutations disrupt the normal function of genes.

• Mutations can produce new proteins that may be useful in a changing environment.

• Both of these.

• Neither of these.

Answer explanation

Both of these are true:

-Mutations disrupt the normal function of genes, and

-Mutations can produce new proteins that may be useful in a changing environment.

If an organism has two different alleles for a gene, the one that gets expressed as a characteristic in the organism's body is called...

• dominant

• recessive

• complete

• incomplete

Answer explanation

If an organism has two different alleles for a gene, the one that gets expressed as a characteristic in the organism's body is called the dominant allele.