BIOB51H3 Lecture Notes - Lecture 7: Melanin, Chromosome, Zygosity

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The individuals who have predators grow different morphological traits to defend themselves, such as spikes: environmental variation cannot evolve because there is no change in the gene sequence. It changes the meaning of all downstream codons: causes, misalignment of dna during replication, this is common in regions with repeated base pairs, lack of repair by dna polymerase, examples, huntington"s disease: It is autosomal dominant and manifests in adults. It is caused by insertion of many copies of c-a-g triplets in the. Differences between polymorphism and heterozygosity: for example, there are 2 loci (a and b, in this population of 3 individuals, at locus a there could be aa and bb. Fitness: the effect of mutations on individual fitness can range from, deleterious, neutral, beneficial, most mutations are deleterious, many mutations are neutral, beneficial mutations are rare. Are most mutations beneficial, neutral, or deleterious: caenorhabditis elegans reproduce asexually.

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