Chromosomal Mutations Review

Front

What is a missense point mutation?

Back

A change in sequence that results in one different amino acid being coded for.

Front

What is the mRNA sequence for the original DNA sequence TCT?

Back

AGA.

Front

What is a mutation?

Back

A change in DNA or gene sequences.

Front

What is a point mutation?

Back

A mutation that substitutes one nitrogen base with another.

Front

What type of cells can have DNA mutations that are not passed on to offspring?

Back

Somatic cells.

Front

What is a nonsense mutation?

Back

A mutation that creates a premature stop codon in the protein sequence.

Front

What is a frameshift mutation?

Back

A mutation caused by insertions or deletions that shift the reading frame of the genetic code.

Front

What are germline mutations?

Back

Mutations that occur in germ cells and can be passed on to offspring.

Front

What is the difference between a silent mutation and a missense mutation?

Back

A silent mutation does not change the amino acid sequence, while a missense mutation changes one amino acid.

Front

What is the role of DNA polymerase in mutations?

Back

DNA polymerase is responsible for DNA replication and can introduce mutations if it incorporates incorrect nucleotides.