Genetics and Mutations

Front

What is a codon?

Back

A codon is a sequence of three nucleotides in mRNA that corresponds to a specific amino acid or a stop signal during protein synthesis.

Front

What does the codon UAA signify?

Back

The codon UAA is a stop codon, signaling the termination of protein synthesis.

Front

What is a mutation?

Back

A mutation is a change in the DNA sequence that can lead to changes in the structure and function of proteins.

Front

What is chromosomal inversion?

Back

Chromosomal inversion is a mutation where a segment of a chromosome is reversed end to end.

Front

What is chromosomal duplication?

Back

Chromosomal duplication is a mutation where a segment of a chromosome is copied, resulting in two copies of that segment.

Front

What is chromosomal deletion?

Back

Chromosomal deletion is a mutation where a segment of a chromosome is lost or removed.

Front

What is chromosomal translocation?

Back

Chromosomal translocation is a mutation where a segment of one chromosome breaks off and attaches to another chromosome.

Front

What is a nonsense mutation?

Back

A nonsense mutation is a type of mutation that introduces a premature stop codon in the DNA sequence, leading to incomplete proteins.

Front

What is a missense mutation?

Back

A missense mutation is a type of mutation that results in a different amino acid being incorporated into a protein, potentially altering its function.

Front

What is a frameshift mutation?

Back

A frameshift mutation occurs when nucleotides are inserted or deleted from the DNA sequence, changing the reading frame of the codons.