Evolution

 

Genetic drift is change in the allele frequency of a population due to...

• random chance

• natural selection

• non-random mating (sexual selection)

• artificial selection

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All of the genetic information found in a population

• population

• genetic drift

• evolution

• gene pool

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A mutation is defined as:

• A change in the cell's structure

• Anything that changes in an embryo

• Any change in the physical features of a human

• A change in the DNA sequence

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If a new trait DOES help an organism survive, what may happen to it?

• It dies and its DNA is not passed on

• It survives and its DNA is passed on

• It changes its traits to adapt and survive

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What happened to the peppered moth population after the Industrial Revolution?

• There were MORE LIGHT moths because the bird couldn't see them on the DARK TREES

• There were MORE DARK moths because the bird couldn't see them on the DARK TREES

• There were MORE DARK moths because the bird couldn't see them on the LIGHT TREES

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What is natural selection?

• When reproduction occurs and mutations happen.

• When a offspring has the traits from its parents.

• When an organism is able to camoflauge in its environment.

• the process whereby organisms that are better adapted to their environment tend to survive and reproduce more offspring.

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A giraffe has a long neck in order to better reach leaves to eat. This is an example of _____.

• an adaptation

• environment

• response

• stimulus

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What could cause a species to go extinct?

• Food becomes more plentiful.

• The environment changes drastically and no-one can adapt.

• There is less competition for resources.

• Members of a species have adaptations to enhance survival.

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Humans, birds, whales, and lizards all have similar arm bones. What is the reason for this?

• The function of these bones is the same in all animals
• They live in similar environments
• They have a common ancestor
• All organisms resemble humans

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The structures shown are_________

• homologous
• heterologous
• analogous
• vestigial

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