Your baby's sex is set at conception by the sex chromosome received from the sperm (X for girl or Y for boy), but it takes a while for the actual body parts to develop. The internal sex organs – the testes in boys and the uterus and ovaries in girls – look the ...
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Such artificial insemination techniques include depositing the sperm at the tip of the uterine horn with a flexible probe or pipette to allow fertilization to occur. Such techniques are further improved by first confirming that the mare has ovulated before insemination. Such techniques allow for the...
Non-surgical artificial insemination is achieved for sexed and unsexed equines in a commercially practical manner and with dosages of insemination sperm that were not previously thought to be practical for commercial implementation. Practical and field usable techniques for insemination are presented as ...
Guppies live by a very simple equation: Boy guppy plus girl guppy equals baby guppies. Lots of babies -- a new litter about every 30 days. Because she can store sperm, the female guppy can produce new litters for up to a year, even if you separate her from males. If your guppy is...
By doing this, hCG, often referred to as the pregnancy hormone, plays a crucial role in early pregnancy, since the placenta can not yet produce sufficient quantities of progesterone. hCG also sends a signal to its fellow hormone FSH: do not, repeat, NOT, stimulate any more follicles until ...
Assisted reproduction techniques that involve fertilization of the egg and sperm in the laboratory, subsequently require the transfer of the embryos to deposit them in the woman's uterus. This is the final step of an in vitro fertilization (IVF) treatment, either conventionally or by intracytoplasmi...
In girls, LH signals the ovaries to make estrogen; in boys, it signals the testes to produce testosterone. Children also have LH present in their bodies. What is an LH surge? An LH surge is a rapid increase in luteinizing hormone levels around 24-48 hours before ovulation. This surge ...
The sperm whale (Physeter macrocephalus) lives in every ocean and most of the seas in the world, with the males also traveling into the icy depths of the Arctic and Antarctic. This photo shows a group of sperm whales in the sleeping phase in a position called candle in Mauritius Island, ...
Even better, if you work all the time, you have a solid reason not to do anything but sleep and play video games when you are home. Nirvana. Final Thoughts…. There’s no doubt that old-school-old-boys want “workers” to return to the office. Why? To support their “culture” –...