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;
9 Cards in this Set
- Front
- Back
|
How does natural selection work in natural populations
|
acts on individuals today, to cause evolutionary chagne of populations tomorrow
traits carried by individuals are the good traits of their parents... and were good for the environment of the parents. |
|
|
through meiosis
|
gametic fusion brings together unlike genomes in the hope that the genetic combo is better than the one of the parents, and can better survive in the new environment...
|
|
|
pros and cons of sexual reproduction
|
sexual reproduction is complicated, costly and dangerous, search for mates takes time, energy, increases predator risk... once you have a mate, it may take additional investments...v
|
|
|
how do you choose who to mate with when there are multiple potential mates
|
a
|
|
|
sexual selection
|
allows and explains
|
|
|
mate quality
|
good genes or low parasite loads
|
|
|
sexy son hypothesis
|
females will choose a male that appears to be healthy adn strong
goal= produce male offspring that are healthy and strong resuly= sons are born healthy and strong and are suited to court females |
|
|
zahavi's handicap princip.e
|
suggests that animal of greater fitness, have to advertise it
if it is a reliable signal for an individual with conflicting interests, accurately advertise a trait |
|
|
a
|
a
|
