Most Variation in Animals is Due to Genes AND Environment

Question 1

What is most variation in animals caused by?

Answer 1

A mixture of genetic and environmental factors

Question 2

What is almost every single aspect of a human affected by?

Answer 2

Our environment in some way

Question 3

What factors aren’t affected in any way by environment?

Answer 3

Eye colour
Hair colour (vanity plays a big part)
Inherited disorders (haemophilia, cystic fibrosis)
Blood group

Question 4

Environment can have a large effect on human growth even before…

Answer 4

Someone’s born

Question 5

For example, what can a baby’s weight be affected by?

Answer 5

The mothers diet

Question 6

What can having a poor diet whilst you’re growing up do?

Answer 6

Stunt your growth - another environmental variation

Question 7

Health -

Answer 7

Some people are more likely to get certain diseases due to their genes
Lifestyle also affects the risk e.g smoking

Question 8

Intelligence -

Answer 8

• theory: although your maximum possible IQ might be determined by your genes, whether you get to it depends on environment e.g upbringing and school life

Question 9

Sporting ability -

Answer 9

Again, genes probably determine your potential, but training is important too