Sentence examples for parthenogenesis from inspiring English sources
The word "parthenogenesis" is correct and usable in written English
It refers to a form of asexual reproduction where an organism develops from an unfertilized egg. Example: "Some species of lizards can reproduce through parthenogenesis, allowing them to thrive in isolated environments." Alternatives include "asexual reproduction" or "virgin birth."
noun
Reproduction by the development of a single gamete (viz. an ovum or ovule) without fertilisation by a gamete of the opposite sex; compare , . Asexual reproduction in toto; agamogenesis. An instance or example of parthenogenesis.
And that the inheritance of an acquired characteristic is quite startling.Rotifers are unusual in that they often reproduce by parthenogenesis (some species, indeed, can reproduce only in this way).
Human reproductive cloning is so fraught with technical risks and ethical dilemmas that few respectable scientists will touch it, and parthenogenesis, while occasionally also observed in mammals, never produces viable offspring.
Many species of fish, birds and snakes reproduce naturally through parthenogenesis.
In some species parthenogenesis can sometimes occur.
A few insects (e.g., the stick insect Carausius) rarely produce males, and the eggs develop without fertilization in a process known as parthenogenesis.
Apospory and apogamy occur in bryophytes, pteridophytes, and angiosperms, whereas parthenogenesis occurs in ferns and angiosperms.
Embryos can also be created by parthenogenesis a nifty biological trick in which an unfertilised egg cell is coaxed into providing all the genetic material required for embryonic development.
Most species reproduce sexually, but certain forms also reproduce by parthenogenesis i.e., the eggs develop into new individuals without being fertilized by the male.
Others exhibit parthenogenesis the production of young without fertilization a phenomenon associated with polyploidy (multiple sets of chromosomes) in earthworms and accompanied by degeneration of male gonads.
Though Advanced Cell Technology may have managed to create early-stage embryos, Dr Schatten awaits experimental evidence that these can develop far enough for stem cells to be derived from them and that those stem cells will, in turn, develop normally in a test tube.Parthenogenesis, on the other hand, is proving a reliable source of embryonic stem cells, at least in monkeys.
In the January issue of Wired, a popular technology magazine, researchers at Advanced Cell Technology, an American biotechnology company, are reported to have used both techniques to create human embryos healthy enough to make it through at least the earliest stages of development.Parthenogenesis occurs in the animal world.
