Evolution

Question 1

What is variation

Answer 1

the differences in the characteristics of individuals in a population

Question 2

what is the equation of phenotype?

Answer 2

Genotype + environmental effects

Question 3

What is interspecific variation?

Answer 3

variation between organisms that belong to different species

Question 4

what is intraspecific variation?

Answer 4

variation within the same species - although they will have more in common with each other than with members of different species

Question 5

1 example of interspecific variation
1 example of intraspecific variation

Answer 5

1. human and a hedgehog
2. 2 humans

Question 6

A change in the inherited characteristics of a population over time through a process of natural selection - what is this the definition of?

Answer 6

evolution

Question 7

what was Lamarck’s theory?
1. within a species, ? all start off looking very ?
2. some individuals would ? as a result of use or ? of a part of the body
3. offspring would then inherit their ? acquired characteristics and develop it ?
4. eventually over ? the environment would have directly affected the ? - therefore changing the nature of the ?

Answer 7

1. organisms, similar
2. change, disuse
3. parents’, further
4. time, individual, genes

Question 8

example of an acquired characteristic (Lamarck)

Answer 8

repeated use of an arm would increase its size and then would be passed on to their children and they would be able to develop the size even more!

Question 9

examples of phenotypes caused by genes only?

Answer 9

blood group, natural hair colour, shape of ear lobe, eye colour

Question 10

examples of phenotypes caused by environment ?

Answer 10

tattoos, language, hair colour and length

Question 11

examples of phenotypes caused by both?

Answer 11

sporting achievements, height, skin colour, mass