BIOC14H3 Lecture Notes - Lecture 4: Male Reproductive System, Genetic Diversity, Preoptic Area
9 Feb 2013
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These epigenetic marks are established in the germline and are maintained throughout all somatic cells of an organism: non-mammals in general do not have imprinted genes, broth syndromes are associated with loss of chromosomal region 15q11-13. For future: find a way to unmethylate the normal gene (because person will have one healthy gene and one disease gene) so that only the healthy gene is expressed and the diseased gene is methylated. Individuals vary differences are inherited many more individuals are produced that survive and reproduce favourable variants will leave more offspring (survival of the fittest) These facts create an inevitable process (evolution) that will modify organisms and species over time. Some traits have specialized roles for reproductive success. Sexual selection acts on traits that enhance reproductive success. Inrassexual selection between members of the same species of the same sex (example: competition of males for females)
