10.5 Types of Variation

Question 1

interspecific variation

Answer 1

differences between members of different species

Question 2

intraspecific variation

Answer 2

differences between organisms within a species

Question 3

Genetic causes of variation

Answer 3

1. Alleles
2. Mutations
3. Meiosis
4. Sexual Reproduction
5. Chance- many different gametes are produced from the parental genome, as to which two combine during sex is by chance (random fertilisation)

Question 4

Asexual reproduction

Answer 4

Leads to the production of clones that are genetically identical to their parents, so variation is much less like than with sexual reproduction. The only cause is mutation.

Question 5

An example of something only determined by genetic variation

Answer 5

Blood Type

Question 6

Environmental causes of variation

Answer 6

Plants more effected than animals due to their lack of mobility
Example: scars

Question 7

Both

Answer 7

In most cases variation is a combination for example height, skin colour.

Due to this, it is difficult to investigate and draw conclusions about the causes of variation in any particular case. eg. Intelligence??