Pages in this set

Page 1

Preview of page 1
NATURAL SELECTION

Useful adaptations become more common in populations of species because of evolution by natural selection:


1. Individuals within a population show variation in their phenotypes.
2. Predation, disease and competition create a struggle for survival.
3. Individuals with better adaptations are more likely to survive, reproduce and pass…

Page 2

Preview of page 2
Sampling Methods:

Quadrats: counting individuals and calculating a percentage cover.
Mark-Release-Recapture: Use proportion of marked in recapture to estimate whole population.

You can measure diversity within a species by looking at genetic diversity; the variety of alleles in the gene pool of a species. This can be
done by:

DNA…

Comments

No comments have yet been made

Similar Biology resources:

See all Biology resources »