PARTHENOGENESIS parthenos "virgin " and genesis " creation". Reproduction without fertilization. Parthenogenesis. More specifically, it occurs when a female gamete develops a new individual without being fertilized by a male gamete.
Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.
PARTHENOGENESISparthenos "virgin" and genesis "creation"
In what organisms does parthenogenesis occur?
Honey bees are also able to reproduce without fertilization, although the purpose of the parthenogenesis reproduction is slightly different than in other animals.
The queen bee only mates once during her lifetime (although she may mate with many male bees during that time).
The sperm is used to fertilize some of her eggs, which will become female worker bees. Her unfertilized eggs will grow into bees via parthenogenesis and will all be male drones.
Parthenogenesis in KomodoDragons
A baby Komodo dragon hatches from an unfertilizedeggat the London Zoo.
Parthenogenesis in WhiptailLizard
An all-female species
The lizard on top plays the role of a male.
They switch sex roles every 2 or 3 weeks during the breeding season, mediated by hormones.
Depending on the species, parthenogenesis happens for different reasons. Some species that normally reproduce sexually will sometimes reproduce asexually, either for lack of males, for population sex control, or in some cases because of an abundance of resources.