Evidence and Selection Flashcards
to test a theory you have to make what?
predictions
what will support the theory
correct predictions
what are two correct predictions of natural selection about species
- species are inter-related
- species are changed over time
why are we more similar to siblings then cousins
the common ancestors for siblings is closer
how do we know that species are interrelated?
family tree
what traits does the common ancestor have?
the similarities that the species have in like
what are three types of homologies?
structural
developmental
genetic
how do they name genes
after what happens when it isn’t working
what kind of evolution is homology?
divergent evolution
what kind of evolution is analogy?
convergent
what is evolution?
change over time
when does natural selection operate?
at extremes
what is homology
similarities shared because of a common ancestor
what is analogy
similarities shared not because of a common ancestor but usually because of the same environment
