Monotreme Reproductive Biology and Behavior

Monotremes atomic number 18 mammals that are oviparous, or egg- puting. There are entirely 3 extant species of egg-laying mammals: the playtpus and two species of echidna. Their reproductive systems are top-notch specialized to facilitate two the production of eggs and milk. The manly 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 mistakable to a reptilian egg. Platypuses and echidnas expect very different behaviors when it comes to mating, but their genetics are quite similar. Monotremes possess a few 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 crew either their own. Introduction At first glance plat ypuses count to be an amalgamation of mammals, birds, and everything in between. In fact, their reproduction biological science also has much in common with a florilegium 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 two hundred 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 moreover trio living species of monotremes: the platypus (Ornithorhynchus! anatinus) and two species of echidnas (Tachyglossus aculeatus, and Zaglossus bruijni). The formulate 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 testament condone the background of the animals, the anatomy of the tract and egg, breeding behavior, and genetics...If you wishing to take down a full essay, order it on our website: OrderCustomPaper.com

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