chapter 19- genetics of living systems Flashcards
1
Q
what is a mutation
A
a sudden, significant, random change in the dna of a cell
they introduce an unpredictable form of variation
2
Q
do mutations occur in all groups of living things
A
yes
3
Q
a mutation may be restricted to …… or may even affect a …….. in a cell
A
a single gene or a number of chromosomes in a cell
4
Q
what does it mean if a mutation occurs in a somatic cell
A
somatic mutations are not in gametes and so only affect the organism and cannot be inherited
only true of multicellular organisms
5
Q
what are germ-line mutations
A
mutations that occur in gametes and so may be transmitted to future generations in the future
only true of multicellular organisms
6
Q
A
