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Evolution refers to the gradual change of a species over time. Individuals do not evolve, but populations evolve from one generation to the next as patterns of survival and reproduction influence the gene pool. The process by which evolution takes place is called Natural Selection: the best-suited organisms for the environment live longer and reproduce more times. We've previously learned that a population must have variations, or genetic differences, for natural selection to take place. Let’s focus on species that live and compete in the African grasslands. Make inferences to answer following questions with your partners.
Some lions are big in size, some lions are small in size.
Some lions are big in size, some lions are small in size.
· Which trait would allow lions to take down large prey, like buffalo? WHY?
· Which trait would allow lions to move faster, and capture quick prey like gazelles?
Some lions have thicker fur, some lions have thinner fur.
Some lions have thicker fur, some lions have thinner fur.
· Which trait would be an advantage in an environment where there are many disease carrying insects? WHY?
· Which trait would be an advantage in a very hot environment with little shade? Why?
Some lions have very loud, scary ROARS, and BIG furry manes. What’s the point of this…?
Some lions have very loud, scary ROARS, and BIG furry manes. What’s the point of this…?
· Can you think of 2 situations where a lion might want to “intimidate” another individual? EXPLAIN.
MOST lions live in groups (called ‘prides’), some lions are stuck living alone.
MOST lions live in groups (called ‘prides’), some lions are stuck living alone.
· Why would it be an advantage for a lion to live in a group?
· Why might a lion be found living alone?...
Some lions live to be 8 years old, some lions only live to be 2.
Some lions live to be 8 years old, some lions only live to be 2.
· Which lion will reproduce more times? WHY
· How is the lion that lives longer influencing the next generation of lions?
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