Violinist's Thumb Chapter 8 Love and Atavisms

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placenta

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organ in the uterus of most mammals during pregnancy; nourishes and maintains the fetus through the umbilical cord

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hemorrhage

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bleeding, especially when profuse

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translocation

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a section of a chromosome breaks and reattaches to a different chromosome

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non-twin chromosomes

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also called non-homologous; chromosomes that do not carry the same genes in the same sequences

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junk DNA

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now known as non-coding DNA, does not comprise genes or code for proteins; in humans, 99% of our DNA is non-coding

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introns

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sections of mRNA that are removed before mRNA exits the nucleus (these sections stay in the nucleus)

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exons

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sections of mRNA that are fused together to produce the mature mRNA that exits the nucleus and is used to produce a protein

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mammal

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class of animal that has fur or hair, gives live birth, and produces milk

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titin

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largest protein in humans; part of muscle fibres

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RNA splicing

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process by which mRNA is cut into sections prior to leaving the nucleus; exons are fused together and exit the nucleus while introns remain in the nucleus and are recycled