6.3 Genetic and Environmental Differences

Question 1

What exception are clones different to each other?

Answer 1

In the case of any differences caused by environmental causes

Question 2

What are the most important factor in controlling the appearance of an individual?

Answer 2

Genes

Question 3

Why might plants of the same genes be different in appearance?

Answer 3

Some might not be getting the same amounts of light, nutrients or space to grow as the other

Question 4

What are the impacts of women drinking alcohol or smoking during pregnancy?

Answer 4

Baby has a small birth weight

Question 5

Name the two types of twins

Answer 5

Identical and fraternal

Question 6

How are identical twins made?

Answer 6

One egg and one sperm fuse and split to make two identical embryos

Question 7

How are fraternal twins made?

Answer 7

2 eggs and 2 sperm or 1 egg and 2 sperm, the egg splits to make 2 embryos

Question 8

Name 3 causes for differences in the characteristics of individuals of the same species:

Answer 8

• differences in the genes they have inherited
• the conditions in which they have developed
• a combination of both