Natural selection model

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Slide 1

A population showing variation in colour.

Continuous or discontinuous?

Slide 2

There is lots of food so your population survives and reproduces. Add 5.

Slide 3

The bright yellow of some of your offspring attracts predators. All but two of them get eaten.

Slide 4

There’s lots of food and hiding places for the green and

blue, but the red ones can’t hide and get eaten.

Slide 5

Slide 6

Plenty of food

and its spring so another 10 offspring are born, they are a variety of colours.

Slide 7

Plenty of food and its spring so another 10 offspring are born, they are a variety of colours.

Slide 8

It’s winter and 5 of your population die

Slide 9

Slide 10

Its mating time again, blue and green mate and produce 5 green and 2 blue offspring. A mutation also produces 2 red offspring

Slide 11

Its mating time again, blue and green mate and produce 5 green and 2 blue offspring. A mutation also produces 2 red offspring

Slide 12

There is lots of food, and all reproduce 2 offspring, but the white are better at finding water and hiding from predators so they produce 5 offspring

Slide 13

There is lots of food, and all reproduce 2 offspring, but the white are better at finding water and hiding from predators so they produce 5 offspring

Slide 14

The bright red colour attracts mosquitoes carrying a deadly disease. They all die.

Slide 15

The bright red colour attracts mosquitoes carrying a deadly disease. They all die.

Slide 16

It is a particularly hot summer