Evolution

Question 1

The process of natural selection occurs by:

Answer 1

VA – There is variation in the phenotypes in the _________population due to random mutations as ________________________
ST – All organisms face a daily struggle to survive and reproduce. The ______ with ______________struggle because ____________________(selection pressure)
SE – The _____________have a selective advantage as ______________________________________________________
IN – The organisms that have a selective advantage (_____________________________), survive, reproduce and their offspring inherit the alleles for the trait of ____________________
E – Evolution occurs by natural selection and there is a change in allele frequency over time and the ________________population becomes better suited to its environment.

Question 2

Define evolution

Answer 2

Change in allele frequency over time

Question 3

State what causes variation within a species

Answer 3

Random mutations in DNA

Question 4

Define biological fitness

Answer 4

Ability to survive, reproduce and pass on alleles to offspring.