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| The process by which modern organisms have descended from ancient organisms |
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| A well-supported explanation of phenomena that have occured in the natrual world |
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| Preserved remains or evidence of an ancient organism |
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| Selection by humans for breeding of useful trairs from the natrual varation amoung diffrent organisms |
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| Competion amoung members of a species for food, living space, and other necessities of life |
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| Ability of an organism to suvive and reproduce in its enviroment |
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| Inherited characteristics that increase an organisms chance of survival |
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| Process by which individuals that are better suited to their enviroments survive and reproduse most successfully |
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| Descent with modification |
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| Princable that each living species has descended with changes from other speices over time |
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| Prinacble that all living things were descended from common ancestors |
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| structures that have diffrent mature forms in diffrent organisms but developed from the same embyonic tissues |
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| Organs that serves no useful function in an organism |
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Definition
| Combined genetic iformation of all the members of a particular population |
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Definition
| numbers of times an allele occurs in a gene pool compared with the numbers of times other alleles occur |
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Definition
| traits controllled by a single gene that has two alleles |
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Definition
| Traits controlled by two or more genes |
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Term
| Describe the two main sources of genetic varation in a population |
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Definition
Mutaion- is any change in a sequence of DNA
Gene shuffling- crosing-over increases the number of geneotypes |
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