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.

Question 5

selective advantage

Answer 5

The organisms that have a selective advantage are those that have a phenotype that make them more likely to survive and then reproduce.

Question 6

Define selection pressure

Answer 6

Selection pressures are factors in an organism’s environment that removes unsuited individuals from a population.

Question 7

Define a transgenic organism (TGO)

Answer 7

Genetically modified organisms where genes from a different species have been added to their genome

Question 8

Define a genetically modified organism (GMO)

Answer 8

organisms whose genome has been altered in some way.

Question 10

VA

Answer 10

VA – There is variation in the phenotypes in the _________population due to random mutations as ________________________

Question 11

ST

Answer 11

ST – All organisms face a daily struggle to survive and reproduce. The ______ with ______________struggle because ____________________(selection pressure)

Question 12

SE

Answer 12

SE – The _____________have a selective advantage as ______________________________________________________

Question 13

IN

Answer 13

IN – The organisms that have a selective advantage (_____________________________), survive, reproduce and their offspring inherit the alleles for the trait of ____________________

Question 14

E

Answer 14

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.