Evolution

Question 1

What is the theory of evolution

Answer 1

All of today’s species have evolved from simple life forms that first started to develop over billions of years ago

Question 2

Who came up with the theory of evolution

Answer 2

Charles Darwin

Question 3

How does Charles Darwin’s theory work

-he knew that o… of a species showed wide p… variation
-he knew organisms have to c… for limited r… in an ecosystem
-he concludes that the o… with the most suitable c… for the environment would be more s… competitors and would be more likely to s…
—>survival of the …
-the organisms would then r… and pass on their g… producing s… offspring
-the less a… organisms are more likely to d… and not reproduce
-over time b… characteristics become more c… as the species e…

Answer 3

-he knew that organism of a species showed wide phenotypic variation
-he knew organisms have to compete for limited resources in an environment
-he concludes that the organisms with the most suitable characteristics for the environment would be more successful competitors and would be more likely to survive
—>survival of the fittest
-the organisms would then reproduce and pass on their genes producing successful offspring
-the less adapted organisms are more likely to die and not reproduce
-over time beneficial characteristics become more common as the species evolves

Question 4

What is the development of new species called

Answer 4

Speciation

Question 5

What is speciation

Where over a long p… of time the p… of an o… can change so much due to n… selection that a completely new s… is formed

Answer 5

Where over a long period of time the phenotype of an organism can change so much due to natural selection that a completely new species is formed

Question 6

Ways that species become extinct

-e… changes
-new p…
-new d…
-can’t c… with a new s…
-c… event

Answer 6

-environmental changes
-new predator
-new disease
-can’t compete with a new species
-catastrophic event

Question 7

Why did people disagree with Darwin

-went against r… beliefs
-he couldn’t explain why or how u… characteristics were p… on at the time
-there wasn’t enough e…

Answer 7

-went against religious beliefs
-he couldn’t explain why or how useful characteristics were passed on at the time
-there wasn’t enough evidence

Question 8

Who was Lamarck and his argument

-he was a s…
-argued that changes that an o… acquires during its l… will be p… onto it o…

Answer 8

-he was a scientist
-argued that changes that an organism acquires during its life will be passed onto it offspring