Why is crossing over in meiosis important?
A cheetah is adapted for running at high speeds. This helps the cheetah be able to catch a gazelle. Lions also eat gazelles. What type of relationship does the cheetah have with a lion?
An influenza virus attacks a human. Which two organ systems fight the virus?
It aids in cytokinesis.
It decreases the probability for mutations.
It makes four unique daughter cells.
It increases genetic diversity.
predation
competition
mutualism
commensalism
nervous and cardiovascular
endocrine and immune
circulatory and immune
digestion and endocrine