BIO120H1 Lecture Notes - Lecture 6: Electrophoresis, Meiosis, Tangled
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BIO120H1 Full Course Notes
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This lecture focuses on different reproductive systems in biology (darwin was interested in this topic). First forms of reproductions on earth reproduced by clonal reproduction. Important transformation in history of life: when organisms started to have sex (big question: why did that occur?) Only few plants/animals can do both forms reproductions (clonal reproduction and sexual reproduction: ex 1. Water fleas (daphnia: uses asexual(clonal) reproduction when the environment is cooler and water is calm water, switches to sexual reproduction when environment is warmer and water is turbulent, costs and benefits change depending on environmental conditions, ex 2. Water hyacinth also uses both forms of reproduction: native range of water hyacinth is in the amazon/low-land south america, where the flowers are floating. In their native area, they float down the amazon water (with eroded soil) and begin to clone since there a lot of nutrients in the water. Risks of predation (when animals display for sex)
