Question

A mutation is:
any change in the information stored on the RNA molecule
any change in the information stored in the DNA molecule
impossible and has never been observed
of no value to the evolutionary fitness of a species

Answer 1

I think that is B

Answer 2

A mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the gene.

How does this happen? Like words in a sentence, the DNA sequence of each gene determines the amino acid sequence for the protein it encodes. The DNA sequence is interpreted in groups of three nucleotide bases, called codons. Each codon specifies a single amino acid in a protein.

Because DNA damage occurs spontaneously and as a result to ubiquitous environmental agents, most organisms possess some capacity to repair their DNA and DNA is the only macromolecule which is repaired by cells. We can divide "repair" mechanisms into 3 categories:

damage reversal--simplest; enzymatic action restores normal structure without breaking backbone

damage removal--involves cutting out and replacing a damaged or inappropriate base or section of nucleotides

damage tolerance--not truly repair but a way of coping with damage so that life can go on

it is B hope i helped :P

Answer 3

A mutation is a permanent change in the DNA sequence of a gene

Answer 4

thanks :D

Answer 5

Welcome