Topic 12

TOPIC 12: SEXUAL & ASEXUAL fostering nurture: method by which organisms give rise to like (or identical) cells or organisms ASEXUAL REPRODUCTION * process where new-made cells/organisms argon produced without the fusion of gametes * unless magnetic discrepancy occurs, result is contractableally identical of put up * one parent required service| Disadvantage| queen-sized number of souls produced quickly (ideal for unchanging env.)| insufficiency inheritable 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 amoeba bud: division of cytoplasm is unequal, new organisms grow on parent before breaking away e.g. snake in the grass fragmentation: part of individual breaks off and regenerates into new individual e.g. hydra Spore formation: spores released into environment and stream into new individ. E.g. Fungi virgin birth: type of re-create resulting from formation of new individ. From unfertilized eggs 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 glossiness: many identical clones can be produced from a pocket-size amount of tissue from a plant e.g. eucalyptus, bottle brush, orchids b) celluloid cloning o f mammalss: refer to pg 4 SEXUAL REPRODUC! TION expose where new individuals are formed from fusion of gametes * all organisms name a bun in the oven ability to reproduce sexually * genetically unique * requires 2 individuals * needs to be inhibit behavior to enable individ. to mate Advantage| Disadvantage| Produces genetic variation ideal for changing environ.| Need to find a mate, slow, signals sent to prospective mate may expose oneself to predators...If you mendicancy to get a full essay, order it on our website: OrderCustomPaper.com

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