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| a cell containing only one set of chromosomes (n). |
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| the quantity of heat a liquid must absorb for 1 g of it to be converted from the liquid to the gaseous state. |
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| an enzyme that untwists the double helix of DNA at the replication forks. |
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| an iron-containing protein in red blood cells that binds oxygen. |
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| an organism that obtains food moelcules by eating other organisms or their by-products |
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| having two different alleles for a given gene. |
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| a small protein with a high proportion of positively charged amino acids that binds to the negatively charged DNA and plays a key role in its chromatin structure. |
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| the steady-state physiological condition of the body |
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| chromosome pairs of the same length, centromere position, and staining pattern that possess genes for the same characyers at corresponding loci. One homologous chromosome is inherited from the organism's father, the other from the mother. |
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| having two identical alleles for a given trait. |
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| in multicellular organisms, one of many types of circulating chemical signals that are formed in specialized cells, travel in body fluids, and act on specific target cells to change their functioning. |
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| a human genetic disease caused by a dominant allele; characterized by uncontrollable body movements and degeneration of the nervous system; usually fatal 10-20 years after the onset of symptoms |
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| in genetics, the mating, or crossing, of two true-breeding varieties. |
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| a type of weak chemical bond formed when the slightly positive hydrogen atom of a polar covalent bond in one molecule is attracted to the slightly negative atom of a polar covalent bond in another molecule. |
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| a chemical process that lyses, or splits, molecules by the addition of water. |
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| having an affinity for water. |
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| having an aversion to water; tending to coalesce and form droplets in water. |
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| in comparing two solutions, referring to the one with a greater solute concentration. |
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| in comparing two solutions, the one with a lower solute concentration. |
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