Evolution

Question 1

Why were Darwin’s theories rejected at first? (3)

Answer 1

> creationism

> lack of evidence

> no knowledge of inheritance and variation

Question 2

Describe natural selection.

Answer 2

> naturally variation occurs because of sexual reproduction

> some of these variations give an advantage

> those who possess the beneficial gene will live longer, reproducing and passing on their beneficial gene.

Question 3

How can mutation cause evolution?

Answer 3

> if the mutation of the gene creates a beneficial characteristic, it will allow the organism to live longer, reproducing and passing on the mutated gene.

Question 4

Summarise evolution.

Answer 4

> over 3 million years ago life began as simple organisms from which the more complex organisms evolved.

Question 5

What were Lamark’s theories?

Answer 5

> individuals in a species can change their features over a lifetime

> the acquired features would be passed on to the next generation.