Search results
Results From The WOW.Com Content Network
The extrinsic incubation period is the time taken by an organism to develop in the intermediate host. [citation needed] For example, once ingested by a mosquito, malaria parasites must undergo development within the mosquito before they are infectious to humans.
Egg incubation is the process by which an egg, of oviparous (egg-laying) animals, develops an embryo within the egg, after the egg's formation and ovipositional release. Egg incubation is done under favorable environmental conditions, possibly by brooding and hatching the egg.
Egg incubation, sitting on or brooding the eggs of birds and other egg-laying animals to hatch them; Incubation (psychology), the process of thinking about a problem subconsciously while being involved in other activities; Incubation period, medical term for the time between being exposed to infection and showing first symptoms
The entire process from skin penetration to adult development takes about 5–9 weeks. The female adult worms release eggs (N. americanus about 9,000–10,000 eggs/day and A. duodenale 25,000–30,000 eggs/day), which are passed in the feces of the human host. These eggs hatch in the environment within several days and the cycle starts anew.
Ascaris egg, incubation process: The Ascaris egg incubation process consists of placing the egg in a controlled environment, at 26 °C (79 °F) during 28 days, in acidic conditions. This process allows for the evaluation of an egg to determine if it is viable or not.
Human fertilization is the union of an egg and sperm, occurring primarily in the ampulla of the fallopian tube. [1] The result of this union leads to the production of a fertilized egg called a zygote, initiating embryonic development. Scientists discovered the dynamics of human fertilization in the 19th century. [2]
In biology, a biological life cycle (or just life cycle when the biological context is clear) is a series of stages of the life of an organism, that begins as a zygote, often in an egg, and concludes as an adult that reproduces, producing an offspring in the form of a new zygote which then itself goes through the same series of stages, the ...
The main stages at which embryo transfer is performed are cleavage stage (day 2 to 4 after co-incubation) or the blastocyst stage (day 5 or 6 after co-incubation). [1] Embryos which reach the day 3 cell stage can be tested for chromosomal or specific genetic defects prior to possible transfer by preimplantation genetic diagnosis (PGD).