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- Cells are the basic structural and physiological units of all living organisms.
- Cells are both distinct entities and building blocks of more complex organisms.
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| phenomenon in which any trait that confers even a small increase in the probability that its possessor will survive and reproduce would strongly be favored and would spread in the population |
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| structural, physiological, or behavioral traits that enhance an organism's chances of survival and reproduction in its environment |
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| sum total of all the DNA molecules in the cell |
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DNA (deoxyribonucleic acid) molecules
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| long sequences of the nucleotides containing genetic information |
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| specific segments of DNA contain the information the cell uses to make proteins |
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| make up of an organism's structure and are the molecules that govern chemical reactions within the cell |
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| alterations of genes that occur spontaneously or as the result of outside factors, including chemicals and radiation |
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formed by interaction of populations of many different species
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| formed by individual organisms that interact among themselves and different organisms |
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