Genetic Variation Flashcards
What three types of mutations are there?
Substitution
Addition
Deletion
What is a mutation?
Change in the genetic material
What is a substitution mutation?
Replacement of one nucleotide in DNA by another nucleotide
What is a addition (insertion) mutation?
Insertion of one or more nucleotides into the DNA strand
What is deletion mutation?
Removal of one or more nucleotides into the DNA strand
What are silent mutations and where do they occur?
Silent mutations don’t change the amino acid coded for by the specific codon
What are genetic redundancies?
Genetic redundancy is now defined as the situation in which the disruption of a gene is selectively neutral. Biology shows us that 1) two or more genes in an organism can often substitute for each other, 2) some genes are just there in a silent state.
What three types of mutations are there?
Substitution
Addition
Deletion
What is a substitution mutation?
Replacement of one nucleotide in DNA by another nucleotide
What is a addition (insertion) mutation?
Insertion of one or more nucleotides into the DNA strand
What is deletion mutation?
Removal of one or more nucleotides into the DNA strand
What are silent mutations and where do they occur?
Silent mutations don’t change the amino acid coded for by the specific codon
What are genetic redundancies?
Genetic redundancy is now defined as the situation in which the disruption of a gene is selectively neutral. Biology shows us that 1) two or more genes in an organism can often substitute for each other, 2) some genes are just there in a silent state.
