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| basic building blocks of all living organisms |
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| deoxyribonucleic acid; consists of strands of molecules that code and store genetic information; located in the nucleus of a cell |
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| threadlike structures made of DNA that are in the nucleus of all cells |
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| scientists who discovered the structure of the DNA molecule |
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| the shape of a DNA molecule, a twisted ladder |
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| a portion of the DNA molecule that consists of a sugar, phosphate, and nitrogen base |
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| a nitrogen base that pairs with thymine (AT) |
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| a nitrogen base that pairs with adenine (AT) |
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| a nitrogen base that pairs with cytosine (GC) |
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| a nitrogen base that pairs with guanine (GC) |
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| sugar & phosphate molecules |
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Definition
| form the side of the DNA molecule |
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| a different form of the DNA code for a specific trait (for example, the alleles of the traid of eye color are blue, brown, green, gray, and hazel) |
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| an allele that always shows up in an organism if it is present |
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| an allele that only shows up in an organism if another of its own kind is present |
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| an organism that contains two of the same alleles for a specific trait (that allele always shows up) |
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| an organism that contains two different alleles for the same trait; in this case the dominant allele shows |
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