Evolution

Evolution

100

Biological ______ is the process that results in heritable changes in a population spread over many generations

What is evolution? 

200

How often a form of a gene appears in a gene pool

what is allele frequency?

300

A group of organisms of the same species that live in specific areas

what is a population?

400

individual ____ do not evolve

what are organisms? 

500

“In fact, evolution can be precisely defined as any change in the frequency of alleles within a ______ from one generation to the next.”

what is gene pool

Natural Selection

100

Individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits.

what is natural selection?

200

The most important influence to evolution?

Natural Selection

300

_____ for resources drives natural selection. Individuals who are most successful will have better access to those resources, and therefore more opportunities to reproduce. 

what is competition? 

400

Changes in allele frequency, changes to genes by mutations, new individuals with new genes enter a population.

what is genetic variation?

500

Certain alleles or traits increase survival rates (long neck allows giraffes to eat plants other species cannot reach).

What is inheritance of successful traits?

Adaptations

100

the ability of an adaptations in different organisms that share a common habitat.  

What is fitness?

200

 Changes within the cells/tissues of an organism that increases their fitness

physiological adaptation 

300

If an adaptation improves an organism’s fitness, you will see the frequency of the allele for that trait  _________ in the population over time =_________

what is increase, evolution ?

400

Behaviors exhibited by a population of organisms that increases their fitness

behavioral adaptation

500

What are the three types of adaptations? 

Structural, behavrial, physiological 

Mechanisms of Evolution

100

what are the five mechanisms of evolution? 

natural selection, gene flow, mutations, genetic drift, artificial selection

200

• Change in DNA sequence that affects genetic information. Some are beneficial, some are not. 

• Mutations are natural!

• They increase genetic diversity in populations.

What are Mutations?

300

This is an example of what mechanism of evolution? 

what is gene flow?

400

This is an example of what mechanism of evolution?

what is genetic drift?

500

Over time humans have used selective breeding the enhance the size and color of corn. What is this an example of?

what is artificial selection?

Patterns of Evolution

100

The process by which an ancestral species gives rise to a number of new species that are adapated to different environmental conditions, and are less alike. (related species become more different over time). 

What is divergent evolution? 

200

These two species both have fins and streamlined bodies for swimming, yet they don't share common ancestry. This is an example of what kind of pattern of evolution?

What is convergent evolution? 

300

flowering plants and pollinators have developed co-adaptations that allow flowers to attract pollinators, and insects and birds have developed specialized adaptations for extracting nectar and pollen from the plants. This is an example of what ?

what is coevolution? 

400

the number of alleles in a population?

What is gene frequency?

500

Analogous Structures are evidence of what type of evolution? 

what is convergent evolution?