Biology 1001A Lecture Notes - Lecture 10: Enzyme, Zygosity, Mutation
8 Sep 2017
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Mutations: 80 new mutations passed down from parents to children, ca(cid:374) have a np i(cid:374) ge(cid:374)o(cid:373)e that is(cid:374)"t i(cid:374) pare(cid:374)t"s ge(cid:374)o(cid:373)e, alternate alleles have different dna sequence. Choose to reproduce asexually or sexually: origin is not randomly distributed around genome, only germ line variation is available to selection. Purple vs. white: had no idea of genes, chromosomes, meiosis, etc. Ideas: variation in traits due to different alleles, alleles segregate randomly into gametes, organisms inherit two alleles for each trait, appearance of heterozygotes determined by dominant alleles, an allele that determines phenotype of heterozygote= dominant allele. Punnett square: monohybrid cross (pp x pp, p and p= pp, pp, pp. Bio lecture 10- oct 18 2016: on y there is an sry gene that triggers male development; however, it is not full of (cid:862)(cid:373)ale(cid:863) ge(cid:374)es, sex chromosomes do not only carry the genes to make a gender.
