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19 Cards in this Set
- Front
- Back
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Inherited traits
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___________ are passed on from parnet to offspring
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Acquired traits
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__________ are gained or learning from the environment; one is not born with these traits.
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Mutations
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Random genetic changes in an organism are called ________
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Common Ancestors
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All living things are related to one another to varying degrees because they share _______________
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Fossils,biological and genetic evidence
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In addition to _______________genetic evidence is used to show common ancestry between animals from the past and present.
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Geologic time scale
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The ______________ is used by scientists to help compare present and past life forms.
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Theory of natural selection
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The __________________states that organisms with traits that are not suited for their environment usually die before reproducing so their traits are not passed on.
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Variation
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New gene combinations cause _______ within the same population , for example brown fur or white fur.
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Reproductively successful
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__________________ organisms have the traits needed to survive in their environment.
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Mutually beneficial
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the type of symbiosis where both organisms help in the relationship is known as _______________.
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Consumers
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___________eat other living things for energy.
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Biodiversity
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____________is the number and variety of living things within an ecosystem.
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Natural balance
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______________ occurs when all organisms in a food web have enough resources for their population to survive.
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Succession
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_________ is a gradual, predictable change that happens to an ecosystem.
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Pioneer spiecies
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__________ are the first species to arrive in an area.
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Climax community
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The last stage of succession is a ________________.
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Selective breeding
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______________ occurs when humans choose wich traits show up in a population.
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Cominance or in complete dominance
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When an organism recieves two different genes and niether one is dominant, the organism will express both genes; this is called___________ or ____________.
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Specialized cells
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______________ do not look the same because they are shaped a certain way so they are able to perform their job/function.
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