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Published byAllen Williamson Modified over 9 years ago
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What is a Chromosome? And other related questions
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Chromosomes Threadlike structures or granular chromatin during interphase In nucleus Carry DNA Form for mitosis Displayed as a karyotype
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Gene Part of chromosome that controls the inherited traits One part of DNA Located on a certain place of the chromosome 1 gene = 1 trait May work together Also control chemical processes of life
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Chromosome Pairs Occur in pairs One version from each parent One version of each gene from each 23 pair in humans Usually similar in size, shape, and genes (homologous)
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All these have 23 pair! Does chromosome # determine species?
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Privvy = Privet (privacy)
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Alleles Different versions of same gene Usually found at same location on the same chromosome At least 2; sometimes several
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Examples of Gene Alleles Eye color – blue or brown groups Then divided: Blue = blue, green, gray Brown = gold, brown, black Amount of melanin
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Examples of Gene Alleles Flower color Two or many
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Examples of Gene Alleles Seed coat Just two
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Others
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