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Evolution

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Pamela McGlynn

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4y ago
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Cards in this guide (13)
How does natural selection lead to evolution

a species can gradually change into new species

What is the index fossil of the Cambrian

Trilobite

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

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.

Which is a primary disturbance

A landslide or volcanic eruption is a kind of primary disturbance. It causes a very drastic and sudden change in the landscape.

Which freshwater ecosystem is most productive

marsh or swamp in warm sub tropical climates

What is a reproductive strategy

The method an organism uses to produce offspring

the way that a species creates offspring

Where is a place where a severe drought has occurred

A: Japan

What is the ecosystem of a horned toad

Most horned toads love the hot, dry desert environments.

which is a density-independent factor in controlling a population

C) apex

a trait has 2 alleles and there frequencies are represented by q and p if p = 0.90 what is q

.9

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