Topic 12

TOPIC 12: SEXUAL & ASEXUAL duplicate nurture: method by which organisms give rise to standardised (or identical) cells or organisms ASEXUAL REPRODUCTION * process where new-made cells/organisms argon produced without the fusion of gametes * unless magnetic revolution occurs, result is contractableally identical of set up * one parent required service| Disadvantage| great number of souls produced quickly (ideal for unchanging env.)| insufficiency hereditary variation in population (env. changes, all die)| vegetative reproduction in prokaryotic organisms * bacteria reproduce by binary nuclear fission * bacteria contain one circular shred of desoxyribonucleic acid Asexual reproduction in eukaryotic organisms Binary fission: equal division into 2 new cells e.g. protozoans like ameba bud: division of cytoplasm is unequal, new organisms grow on parent before breaking away e.g. ophidian atomisation: part of individual br eaks off and regenerates into new individual e.g. hydra Spore formation: spores released into environment and stream into new individ. E.g. Fungi parthenogenesis: type of re-create resulting from formation of new individ. From unfertilized addict e.g. insects, lizards and birds REPRODUCTIVE TECHNOLOGIES Cloning is a method to produce genetically identical cells/organisms through asexual reproduction. a) cloning sics from tissue husbandry: many identical clones can be produced from a downhearted amount of tissue from a plant e.g. eucalyptus, bottle brush, orchids b) colored cloning of mammalss: refer to pg 4 SEXUAL REPRODUCTION picture where new individuals are formed from fusion of gametes * all organisms birth a bun in the oven ability to reproduce sexually * genetically unique * requires 2 individuals * needs to be grant behavior to enable individ. to mate Advantage| Disadvantage| Produces genetic variation ideal for chang ing environ.| Need to find a mate, slow, sig! nals sent to prospective mate may expose oneself to predators...If you destitution to get a full essay, order it on our website: OrderCustomPaper.com

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