phylogenetic trees Flashcards
1
Q
what are phylogenetic trees?
A
a diagram that represents evolutionary relationships among organisms
2
Q
what does the pattern of branches reflect?
A
how species or other groups evolved from a series of common ancestors
3
Q
how does it show relatedness?
A
two or more species are related if they have a more common ancestor and less related if they have a less recent common ancestor
4
Q
what does it show about sequences of genes or proteins?
A
can be compared among species
closely related species typically have few sequence differences
less related species have more
