Search results
Results from the WOW.Com Content Network
A boa constrictor in the U.K. gave birth to 14 babies — without a mate. ... without sperm from a male. The process is called parthenogenesis, from the Greek words for “virgin” and “birth ...
The term is also used in the context of third-party insemination, where a male who is not the woman's usual sexual partner (i.e., a sperm donor) fathers a child for the woman by providing his sperm through sexual intercourse rather than by providing his sperm for it to be used to produce a pregnancy in the woman by artificial means. [10]
Sperm storage organs in the fruit fly Drosophila melanogaster.Female was first mated with GFP-male and then re-mated with RFP-male. Female sperm storage is a biological process and often a type of sexual selection in which sperm cells transferred to a female during mating are temporarily retained within a specific part of the reproductive tract before the oocyte, or egg, is fertilized.
Animal non-reproductive sexual behavior encompasses sexual activities that non-human animals participate in which do not lead to the reproduction of the species. Although procreation continues to be the primary explanation for sexual behavior in animals, recent observations on animal behavior have given alternative reasons for the engagement in sexual activities by animals. [1]
For premium support please call: 800-290-4726 more ways to reach us
Through this research, we gained a lot of knowledge about interspecific pregnancy, specifically what causes it to succeed and fail. [5] Researchers believe that success depends upon the binding of sperm to an oocyte. [5] Without this successful binding, pregnancy failure is more likely to occur after interspecies embryo transmission. [5]
The carcass of a pregnant sperm whale found washed up on a beach in Sardinia, Italy, last week had approximately 49 pounds of plastic waste in its stomach. Pregnant whale found dead with nearly 50 ...
The sperm whale or cachalot [a] (Physeter macrocephalus) is the largest of the toothed whales and the largest toothed predator.It is the only living member of the genus Physeter and one of three extant species in the sperm whale family, along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia.