Which of the following does NOT tend to promote speciation?
a. founder effect
b. reproductive isolation e natural selection d. gene flow
Malaria is caused by what type of organism?
a. an Ampicomplexan called Plasmodium
b. a Euglenoid called Euglena
C. a Nematode
d. a Trematoda
e. a Dino flagellate called Zoo an the llae
Over the past several decades, natural selection has caused populations of Staphylococcus aura us (an infectious wound bacterium) to evolve resistance to most antibiotics. If antibiotic use were stopped, what would you predict would happen to these S. aura us populations?
a. They will go extinct without the antibiotic.
b. The frequency of resistant forms will increase in these populations.
c. The populations will begin colonizing new environments. y of non resistant forms will increase in these populations Natural selection occurs because organisms within a particular species have.... b. c. d. e. the ability to change colour to suit the background variation due to differences in their genes the ability to pass on characteristics acquired over their lifetime fewer offspring than are able to survive Both b and c are correct Bonus (2 points) Explain what 'circular evolution' means. Give an example.