evolution Flashcards
speciation
formation of new species
reproductive isolation
members of two populations cannot inter breed and produce fertile offspring
Darwin’s finches
founders arrive, geographic isolation, changes in gene pool, reproductive isolation
genetic variation #1
mutations
genetic variation #2
genetic recombination during sexual reproduction
genetic variation #3
lateral gene transfer
mutation
is a heritable change in gene sequence
mutations occur in
gametes
mutations cannot occur in
somatic cells
genetic recombination example
crossing over
lateral gene transfer example
conjugation
single gene traits
a trait that is controlled by only one gene
polygenic traits
a trait that is controlled by 2 or more genes
phylogeny
study of the evolutionary history of lineages of organisms
clade
a group of species that includes a single common ancestry and descendants of that ancestors- living or extinct