Evolution #1
Evolution #2
Evolution #3
Evolution #4
Evolution #5
100
What is it called when you have a variety of traits in a population?
Diversity
100
What does an organism's fitness mean?
The ability to survive and reproduce
100
When organisms disappear from the earth
Extinction
100
Proposed the theory of evolution by natural selection
Who was Charles Darwin
100
Name one thing we can compare or look at among organisms to see if they share a common ancestor
bones, DNA
200
What was the environmental factor/pressure that caused the finches in the Galapagos Islands to develop different beak shapes?
Different food sources
200
Traces of organisms left behind in rocks and amber
a fossil
200
What are homologous structures?
Structures that have different functions but the same bone structure
Ex: whale fin and human arm
200
These birds had different shaped beaks depending on the island they were from that Darwin studied
Finches
200
True or False: Individual organisms can evolve
False
300
What are analogous structures?
Structures that have the same function but are the bone structures are different
Ex: a bat wing and a bird wing
300
These are homologous structures. Similarities in these limbs suggest...
a common ancestor
(and adapted to different environments)
300
A characteristic that helps an organism survive
Adaptions/favorable variations
300
Whale ancestors having back legs suggests what?
They once lived on land
300
Species that have a wide variety of traits, what is most likely to happen to this species?
Survive and reproduce
400
Why would a species of tortoise develop longer necks and saddle shaped shells?
Their food source is located higher above their heads.
400
Fossils include preserves...
bones, body parts, footprints, eggs
400
True or False: The better an organism can adapt, the greater its chances of survival.
True
400
When coyotes prey on a group of rabbits, some rabbits are killed and some escape. Which part of Darwin's concept of natural selection might be used to describe this situation?
survival of the fittest
400
Change over time is defined as
Evolution
500
Darwin would describe the overall changes in neck length in a population of giraffes as...
natural selection
500
Islands that Darwin visited
The Galapagos Islands
500
Why do we need to make a new flu shot each year?
the virus can mutate its antigens very quickly
500
Name a source of variation in a species
Mutations, meiosis or sexual reproduction
500
True or false Darwin was looking for a scientific explanation for the diversity of life on Earth
What is true