Speciation

Question 1

What is a species

Answer 1

A group of similar organisms that can reproduce to give fertile offspring

Question 2

What is speciation

Answer 2

The development of new species

Question 3

When does speciation occur

When p… of the same s… become so d… that they can no longer i… to produce f… offspring

Answer 3

When populations of the same species become so different that they can no longer interbreed to produce fertile offspring

Question 4

What leads to speciation

I…: -where populations of a s… are s…

… selection: -the c… on either side of the b… are d…
-so different c… will become more c… in each population due to n… selection

S…: -each population shows g… variation because they have a wide range of a…
-individuals with b… characteristics will become more c… as they have a better chance of s…, so therefore are more l… to successfully b…
-so the a… that control these c… are more likely to be p… on to the next g…
-eventually the p… will have c… so much they have become s… species

Answer 4

Isolation: -where populations of a species are separated

Natural selection: -the conditions on either side of the barrier are different
-so different characteristics will become more common in each population due to natural selection

Speciation: -each population shows genetic variation because they have a wide range of alleles
-individuals white beneficial characteristics will become more common as they have a better chance of survival, so therefore are more likely to successfully breed
-so the alleles that control these characteristics are more likely to be passed on to the next generation
-eventually the populations will have changed so much they have become separate species

Question 5

Who was one of the creators of the theory of speciation

A… r… w…

Answer 5

Alfred russel wallace