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20 Cards in this Set
- Front
- Back
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Homologous? |
structures that are controlled by some of the same inherited genes |
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Analogous? |
structures that appear similar or have the same function but are controlled by different genes |
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cross-breeding? |
selective breeding by combining a desirable feature of one individual with another in the offspring |
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define generation: |
the time between the birth of an individual and when they produce their own offspring |
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define evolution: |
change in the characteristics of a species over many generations |
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what are antibiotics? |
chemicals made by organisms such as fungi to defend them against bacteria |
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what is resistance? |
inherited ability of a species to withstand chemicals such as pesticides |
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what is a selective agent? |
the environmental factor that acts on the population during natural selection |
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what is artificial selection? |
the process by which people choose to breed particular organisms with desirable features; also known as selective breeding or directed selection. |
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what is natural selection? |
the process where an environmental factor acts on a population and results in some organisms having more offspring than others. |
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genetic variation within a population: |
differences in characteristics due to different genes |
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what is biodiversity? |
the number and range of different species that exist on earth or in an ecosystem |
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what is distribution? |
a map of all the places where a species occurs |
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what is embryology? |
the study of the embryos of different species |
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what is sexual selection? |
a special case of natural selection where the environmental factor is the selection of a mate |
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what is inbreeding? |
selective breeding in which closely related individuals are allowed to breed |
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what is isolation? |
keeping interbreeding groups apart by some barrier or mechanism |
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define, species: |
a group of organisms that can interbreed to produce fertile offspring under natural conditions |
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define speciation: |
the process by which one species splits into two or more separate species |
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what are transitional forms: |
fossils that have features of two or more different groups |
