Natural Selection

Question 1

Selective Agent

Answer 1

Environmental factors that ‘selects’ which individuals get to survive and pass on their genes to the next gen (water,temp,predation).

Question 2

Variation

Answer 2

Individuals in a population are different (brown or light fur)

Question 3

What makes a trait an advantage?

Answer 3

one variation will be better suited to the environment (colour to camouflage), to survive and reproduce more

Question 4

How does the population change over time?

Answer 4

Over many generations, advantageous traits become more common in the population.

Question 5

Artificial Selection/selective breeding

Answer 5

The process by which humans choose to breed particular organisms with desirable features

Question 6

Speciation

Answer 6

The process by which one species splits into two or more separate species

Question 7

Species

Answer 7

a species is a group of organisms that share similar traits and are able to interbreed and produce fertile offspring.

Question 8

Courtship Changes

Answer 8

Isolation can lead to animals that develop different breeding songs and rituals

Question 9

Different natural selection pressures

Answer 9

Each group faces different natural selection pressures (e.g. climate, predators), causing them to evolve differently.