Variation and Evolution - AQA GCSE Biology

Question 1

Which scientists developed the theory of evolution?

Accepted Answer

Darwin and Lamarck

Question 2

What is the fossil record

Accepted Answer

millions of fossils that scientist have collected

Question 3

Suggest one characteristic that might be chosen for dogs to be kept as pets in families.

Accepted Answer

Cute, Gentle

Question 4

Selective breeding is also called...

Accepted Answer

Artificial selection

Question 5

Potatoes have been GM to resist attack by pests.The cells produce toxins.What has been done?

Accepted Answer

Changed their genome and their phenotype

Question 6

Definition of FOSSILS

Accepted Answer

preserved remains/traces of organisms that lived the passed

Question 7

What is a clone?

Accepted Answer

Genetically identical

Question 8

Suggest a desirable characteristic that dairy farmers may wish to select for in their herd.

Accepted Answer

High or low milk fat, High in calcium, High milk yield

Question 9

What did Darwin think happened?

Accepted Answer

Variation in a species. Best adapted survive and reproduce, Variation in a species.Survival of the fittest.Pass on genes

Question 10

In embryo transplanting why are the new individuals identical to each other?

Accepted Answer

They come from a single, original embryo

Question 11

Suggest 1 characteristic that might be chosen for flowering plants to be sold in garden centres

Accepted Answer

Large flowers, Colourful flowers

Question 12

What is natural selection?

Accepted Answer

Organisms better adapted to their environment survive.

Question 13

Selective breeding can lead to 'inbreeding'. Why is this bad?

Accepted Answer

Likely to have disease, Less genetic diversity - useful alleles could be lost, May have more inherited defects

Question 14

Why was Darwin's ideas controversial?

Accepted Answer

There was not enough evidence, It challenged the idea of God making all living things

Question 15

Which of these causes extinction?

Accepted Answer

All of the above

Question 16

Suggest an advantage of using GM bacteria to produce insulin for treating people with diabetes.

Accepted Answer

There are no ethical or religious objections, Can be produced at low cost, Can be produced quickly by the bacteria

Question 17

What can cause a species to become separated?

Accepted Answer

Volcanic eruption, Mountain ranges, River

Question 18

Selective breeding is the process by which humans...

Accepted Answer

...breed organisms for particular characteristics

Question 19

Why do people not like GM food?

Accepted Answer

The gene might transfer into wild organisms, It might effect human health

Question 20

Why would we want to clone plants?

Accepted Answer

To get lots of plants, To preserve rare species

Questions 20