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13 Cards in this Set
- Front
- Back
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Germ plasm theory
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cells (gametes) that transmit genetic information from one generation to the next and give rise to other cells. Egg cells and sperm cells. Pertains to multicelluar organisms only.
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Soma
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somatic cells are all the cells of the body other than germ plasm
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- Gene
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unit of inheritance
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- Chromosome
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DNA molecule containing genes
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- Locus:
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location on chromosome of a specific gene
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- Allele:
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different variants of a gene at a locus
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- Ploidy:
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number of each type of chromosome present in a cell
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- Diploid:
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condition of having 2 copies of each chromosome, and indicated as 2n
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- Haploid:
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condition of having only 1 copy of each chromosome, and indicated as 1N (sperm and egg cells are haploid; soma are diploid)
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- Dominant:
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an allele, which in diploid, is always expressed
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- Recessive:
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an allele which is expressed only if paired with identical
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- Homozygous:
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same allele variant at a locus on both chromosomes
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- Heterozygous:
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different alleles at a locus on both chromosomes
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