Natural selection Flashcards
1
Q
what is evolution
A
the permanent change in the frequency of alleles in a population due to natural selection
2
Q
how does evolution occur
A
mutations cause new alleles to arise because of small changes in the DNA sequence which are then passed onto offspring
3
Q
what is the gene pool
A
all the different types of genes in the entire population of a species
4
Q
how are mutations and natural selection related
A
a mutation may give an individual an advantage, meaning it can better survive, have a greater chance of mating and then passing the ggenetic advantage onto offspring
5
Q
what is allele freauency
A
how common an allele is within a population, allele frequency is affected by environmental conditions
