MUTATIONS

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence.

Front

What type of mutation occurs when one nucleotide is altered?

Back

Point Mutation.

Front

What is a deletion mutation?

Back

A deletion mutation is when one or more nucleotides are removed from the DNA sequence.

Front

What is a substitution mutation?

Back

A substitution mutation is when one nucleotide is replaced by another in the DNA sequence.

Front

What is an insertion mutation?

Back

An insertion mutation is when one or more nucleotides are added to the DNA sequence.

Front

What is a frameshift mutation?

Back

A frameshift mutation occurs when nucleotides are added or deleted, causing a shift in the reading frame of the DNA.

Front

What is nondisjunction?

Back

Nondisjunction is the failure of homologous chromosomes to separate properly during cell division.

Front

What is the difference between a point mutation and a frameshift mutation?

Back

A point mutation involves a change in a single nucleotide, while a frameshift mutation involves the addition or deletion of nucleotides, altering the reading frame.

Front

What is an example of a deletion mutation?

Back

If the original DNA sequence is ATTTGAGCC and the mutated sequence is ATTGAGCC, the deletion of 'T' is an example of a deletion mutation.

Front

What is the result of a deletion mutation?

Back

The result of a deletion mutation can lead to a frameshift, altering the entire downstream amino acid sequence.