Term
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Definition
| left(L) and right(D) handed forms of amino acids. When an organism dies, L-form converts to D-form. |
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Term
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Definition
| The same element with different numbers of neutrons. Can be radioactive. |
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Term
| Name the four geological time scales from earliest to most recent. |
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Definition
| Precambrian, Paleozoic, Mesozoic, Cenozoic |
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Term
| In what geological time period are we now? |
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Definition
| Quaternary in the Cenozoic |
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Term
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Definition
| the point at which paried homologous chromosomes remain in contact as they begin to separate during prophase of meiosis, forming a cross shape |
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Term
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Definition
| generation in life cycle of a plant that bears the gamete-producing sex organs. Is haploid and dominant phase in mosses and liverworts. |
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Term
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Definition
| Bacteria divide, creating two new bacteria. Not sexual |
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Term
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Definition
| the number and structure of the chromosomes in the nucleus of a cell |
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Term
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Definition
| the discrete units for a fiven character would segregate away from one another during gamete production |
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Term
| Law of Independent Assortment |
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Definition
| Factors associated with different characters assorted independently, in a random fashion from one another |
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Term
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Definition
| an allele has more than one effect on an organism. EX: Alleles that cause sickle cells to form also causes these cells to rupture easily, causing anemia. |
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Term
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Definition
| One gene suppresses the effect of another gene that is situated at a different locus on the chromosome. Ex: cat has a chromosome for melanin production and one for color of fur. Even if the genotype would produce black fur, the color will be white is the melanin gene is not coded to produce color |
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Term
| Type of Inheritance as seen in eye, hair, and skin color |
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Definition
| Polygenic Inheritance-more than one gene controls |
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Term
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Definition
| when neither allele controlling a characteristic is dominant and the aspect displayed by the organism results from both alleles intermediately |
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Term
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Definition
| Condition that arises when both alleles in a heterozygous organism are dominant and are fully expressed in the phenotype |
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Term
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Definition
| Any phenotypic trait that shows continuous variation and can be measured in terms of length, weight, variation |
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Term
| Only autosomal Dominant Disease in this chapter |
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
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Term
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Definition
| gene for inactivation of the x chromosome |
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Term
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Definition
| insects: females are xx, males are xo |
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Term
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Definition
| two x chromosomes in females, xy in males |
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Term
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Definition
| birds, insects, fish: Sperm always contribute a z chromosome |
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Term
| Formula for Finding approximate distance between two genes on same chromosome |
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Definition
| Recombinant chromosomes divided by total number times 100 |
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