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Natural Selection

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Irma Kerluke

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Cards in this guide (14)
How does natural selection lead to evolution

a species can gradually change into new species

What does natural selection cause

Evolution.

What is an adaptation

a camel has humps to store water

a rabbit that has fur that blends in with snow

a trait that makes an organism more likely to reproduce

What did Malthus think would limit the population size

Food supply

What is the fitness of an organism

The ability to survive and reproduce

What must be true for natural selection to happen

There must be genetic variation in the population

The system must not be in hardy-weinberg equilibrium.

resources must be limited in the ecosystem

What is the name for the process that causes a species to evolve

A) natural selection ( apex (

What idea did Malthus introduce

Mathus felt that population is limited by food supply so we need to limit population growth or starve.

Which best summarizes the peppered moths in England after the industrial revolution

The phenotype changed, which resulted in a black color adaptation.

When will natural selection occur

Natural selection occurs when four conditions are met:

1. There is variation among individuals.

2. That variation is at least partially heritable.

3. That variation is linked to differential reproductive success.

4. More individuals are born than can survive and reproduce.

What question did Charles Darwin attempt to answer

Why do organisms in different places have different traits (apex)

What best summarizes the peppered moths in England after the Industrial Revolution

allele frequency change Apex :)

What is a reproductive strategy

The method an organism uses to produce offspring

the way that a species creates offspring

How are finches in the Galapaagos Islands a good example of adaptation

Finches developed many different adaptations. For example, one type of finch had a short strong beak meant for cracking seeds, while another had a long narrow beak for gathering food from the inside of flowers, and cacti, therefore making each species more adapted to its specific environment and more able to gather food then they would on another island with a different main food source.

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