How are humans and monkeys related?

Answer: 

 

Humans and monkeys are both primates. But humans are not descended from monkeys or any other primate living today. We do share a common ape ancestor with chimpanzees. It lived between 8 and 6 million years ago. But humans and chimpanzees evolved differently from that same ancestor. All apes and monkeys share a more distant relative, which lived about 25 million years ago.

How does evolution explain complex organisms like humans?

Answer: 

Evolution doesn’t happen all at once, especially in complex organisms such as human beings. Modern humans are the product of evolutionary processes that go back more than 3.5 billion years, to the beginnings of life on Earth. We became human gradually, evolving new physical traits and behaviors on top of those inherited from earlier primates, mammals, vertebrates, and the very oldest living organisms.

What do scientists mean when they call evolution a theory?

Answer: 

Like gravity and plate tectonics, evolution is a scientific theory. In science, a theory is the most logical explanation for how a natural phenomenon works. It is well tested and supported by abundant evidence. It means quite the opposite from our informal use of the word theory, which implies an untested opinion or guess. As a scientific theory, evolution enables scientists to make predictions and drives investigations that lead to new kinds of observable evidence. 

How does evolution work?

Answer: 

To survive, living things adapt to their surroundings. Occasionally a genetic variation gives one member of a species an edge. That individual passes the beneficial gene on to its descendents. More individuals with the new trait survive and pass it on to their descendents. If many beneficial traits arise over time, a new species—better equipped to meet the challenges of its environment—evolves.

How Does Evolution Work

 

Syndicate content