Gene Mutations

Front

What is a substitution mutation that has no effect on the amino acid sequence?

Back

Silent Mutation

Front

Are all mutations harmful to organisms?

Back

No

Front

Are mutations random events?

Back

True

Front

What is a point mutation where one nucleotide base replaces an original nucleotide base?

Back

Substitution Mutation

Front

How can mutations benefit humans?

Back

They can make an organism more suited to live in its environment.

Front

What is a mutation?

Back

A change in the DNA sequence of an organism.

Front

What are the two main types of mutations?

Back

Gene mutations and chromosomal mutations.

Front

What is a frameshift mutation?

Back

A mutation that involves the insertion or deletion of nucleotides, altering the reading frame of the gene.

Front

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

Back

A missense mutation results in a different amino acid being incorporated into a protein, while a nonsense mutation creates a premature stop codon.

Front

What role do mutations play in evolution?

Back

Mutations introduce genetic variation, which is essential for natural selection.