Gene drift

solutions

  
 

Explain the difference between genetic drift and natural selection

Natural selections results in adaptations that makes a population better suited to the envirnoment, whereas gene drift is a chance ocurrence andhas no end goal. Nautral selection has an end goal.

 

What are the similarities between genetic drift and natural selection.

Both rely on variation within a population and both are mechanisms of evolution.

  

Give an example of genetic drift apart from the one mentioned here with the beetles.

Consider a population of black, white and spotted rats. By chance 4 black rats find their way into a shipping container. The shipping container is offloaded on an island that has no native rats. The rats quickly establish a black rat population on the island.

 
Answer true of false  
1) Genetic drift does not involve variation in the population  
2) Genetic drift results in adaptations that enable organisms to be better suited to their environment.  
3) Both natural selection and genetic drift result in the change of gene frequency amongst a population  
4) Genetic drift involves competition between members of a species.  
5) Genetic drift is common in nature whereas natural selection is not.