Monotreme Reproductive Biology and Behavior

Monotremes are mammals that are oviparous, or egg- puting. There are even so 3 extant species of egg-laying mammals: the playtpus and two species of echidna. Their reproductive systems are tops(p) specialized to facilitate two the production of eggs and milk. The masculine tract is quite simple. The female tract has qualities corresponding to those of birds, though female echidnas besides possess pouches. The monotreme egg is in like manner very specialized and somewhat alike(p) to a reptilian egg. Platypuses and echidnas gull very different behaviors when it comes to mating, save their genetics are quite similar. Monotremes possess a a few(prenominal) large chromosomes and some(prenominal) unpaired microchromosomes. The descendants of the branch radiation of mammals, monotremes have characteristics of both placentals and marsupials, while still retaining characteristics of reptiles and birds in a confederacy either their own. Introduction At first glanc e platypuses face to be an amalgamation of mammals, birds, and everything in between. In fact, their reproduction biology also has much in common with a soma of animalsreptiles, birds, placentals and marsupial mammals. Platypuses belong to a group of animals called monotremes. These egg-laying mammals have been a closed book to researchers since their discovery by Westerners over cc years ago. The first specimens of platypuses brought back to England were thought to be hoaxes similar to mermaids (Moyal, 2001). Found provided in and around Australia, there are totally trio living species of monotremes: the platypus (Ornithorhynchus anatinus) and two species of echidnas (Tachyglossus aculeatus, and Zaglossus bruijni). The discussion monotreme is Greek for one-hole, referring to the cloaca that is the exit for the urinary, reproductive, and excretory systems (Dawson, 1983). The creatures are oviparous--the females lay eggs that develop outside of her body. This paper volit ion condone the background of the animals, ! the anatomy of the tract and egg, breeding behavior, and genetics...If you indispensability to take down a full essay, order it on our website: OrderCustomPaper.com

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