18.3 natural selection Flashcards
1
Q
what are the 3 selection pressures?
A
predation, disease, competition
2
Q
how is natural selection applied to organisms under selection pressures?
A
the organisms w. advantageous allele are more likely to survive & reproduce & pass on the allele
3
Q
how is allelic frequency affected by natural selection?
A
more advantageous allele has a higher allelic frequency
