LIFESCI 1 Lecture Notes - Lecture 10: Asexual Reproduction, Sexual Selection, Coevolution
21 Jan 2015
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Document Summary
Diverse forms of reproduction: banana slugs, hermaphrodites: single individual with both sex organs. Each can receive sperm from others, give to others, or fertilize their own: whiptail lizards, the entire species is female, they can reproduce asexually, no males needed, chromosomes duplicate in the eggs eggs develop into embryos. Search cost requires that you search and find for a mate (requires time and energy: 3. ) Reduced relatedness when you reproduce asexually, you are 100% related to offspring, but when you reproduce sexually, you are only half-related: 4. ) Risk of sexually transmitted diseases cost of getting sick during sexually reproduction: advantages, 1. ) Generation of novel genotypes parents can produce different genotypes/phenotypes: 3. ) Faster evolution more genetic variability, can speed up the evolutionary process and adaptation to environments that are typically changing: 4. ) Clearance of deleterious mutations more opportunities to get rid of bad gene combinations.
