chapter 11/12 Flashcards
what year did Charles Darwin write his paper on natural selection
1858
why did darwin think the finch’s peak evolved
it’s adapted to acquire different food
what did the Galapagos drought do to the small-beaked finches
reduced the amount of small seed which killed the population
natural selection takes place the there’s ____ in the population
variation
mutation is the ultimate source of new
alleles
adaptation is
a heritable trait that benefits
genetic drift can lead the _____ of an allele from a population by ____
elimination; chance
a chance event / catastrophe can ____ genetic variability
reduce
when does gene flow happen? (migration
when a species moves and reproduces with another species in the new location
homologous structures (similar construction of body parts) indicates that
the have a common ancestor
homology
similar structure, different function
analogy
different structure, similar function
