Gene mutation Flashcards
(7 cards)
Give examples of characteristics controlled by multiple genes.
Skin color, eye color, height.
Define the term mutation.
A change in the DNA sequence of a gene.
What are some potential applications of mapping human genomes?
Identifying genetic disorders, personalised medicine, understanding genetic risks.
How can a mutation cause variation?
It can change the protein made, which may affect how the body functions.
Give examples of mutations in human genes that affect the phenotype.
Sickle cell anemia, cystic fibrosis.
Give examples of mutations with little or no effect on the phenotype.
Silent mutations that don’t change the amino acid sequence of a protein.
Why do many mutations have no effect on the phenotype?
Because they do not alter the amino acid sequence or occur in non-coding regions of DNA.
