LIFESCI 3C03 Chapter Notes - Chapter 3: Cistron, Chromosome, Meiosis
27 Jan 2017
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Survival machines: all animals, plants, bacteria, and viruses. Replicators (genes) are basically the same kind of molecule in all survival machines. Dna is made up of a pair of nucleotide double helices (immortal coil) Sequence of dna nucleotides (a, c, t, g) varies between species. Each cell contains its own set of dna instructions. Genes are at least partially responsible for their survival in the future, because their survival depends on the efficiency of the bodies in which they live and which they helped to build. Some genes are able to control clusters of other genes. Any one individual is a short-lived body for a combination of genes. 23 pairs of chromosomes, one of each kind from each parent. Paired chromosomes are not physically together, but they are identical in the sense that they provide instructions for production of the same protein.
