campbl13 - Chromosomes vs Chromatin Chromosomes Chromatin...

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Chromosomes vs. Chromatin Chromosomes Tightly packaged DNA Found only during cell division DNA is not being used for macromolecule synthesis Chromatin Unwound DNA Found throughout Interphase DNA is being used for macromolecule synthesis
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Gene Representations
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Gene Representations
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Loci (sing. Locus) & Alleles
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Homologous Chromosome Pairs Eucaryote chromosomes come in pairs ( homologues ) Normal humans have 46 chromosomes in 23 pairs One chromosome of each pair comes from an individual’s mother , the other comes from their father Homologous Chromosomes (chromosome pairs) carry genes that control the same Characters , e.g., eye color, blood type, flower color, height, etc. Homologous chromosomes have nearly identical structure, banding patterns, and nucleotide sequences Locus : Physical site on chromosomes where given gene is located Allele : Different forms of the same gene, e.g., A, B, or O blood-type alleles
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Autosomes & Sex Chromosomes Autosomes:
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