Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
How does the principle of parsimony apply to phylogeny reconstruction?
|
The principle implies that the phylogenetic tree most likely to be correct is the one that requires fewest evolutionary changes making phylogeny reconstrution
|
|
|
Define the following terms:
Synapomorphy |
A shared, derived character that can be used to infer evolutionary relationships
|
|
|
Ancestral
|
Original state from which they were born
|
|
|
Monophyletic
|
ancestor and all decendents
|
|
|
Paraphyletic
|
ancestor & some of its decendents
|
|
|
Polyphyletic
|
group that do not share common ancestory
|
|
|
Define primitive
|
(tells us nothing)
|
|
|
Define derived
|
(tells us everything)
|
|
|
what provides the only real evidence of a relationship?
a-synapomorphy b- primitive c-ancesteral d-derived |
A
|
|
|
How do you establish if a character is derived or ancesteral?
|
Derived characters, the outgroup doesnt have it. primitive characters, the outgroup does have it. (derived is part of ingroup)
|
|
|
Which of the following term is preferred and which one is most likely the reality of any group?
a-monophyletic b-paraphyletic c-polyphyletic |
A;B
|
