1 what is the difference between internal and external fertilization?
362260
Internal fertilization is the process when the syngamy (union of male and female gamete) occurs inside the female body after insemination using copulation. In contrast, External fertilization is the syngamy outside the female body, that is in the outer environment especially in water bodies.
1085788
Fertilization: When the sperm joins the egg and fertilizes it, conception takes place. Implantation: Seven to 14 days after sex, the fertilized egg attaches itself to the lining of the uterus.
1371443
The main difference between triple fusion and double fertilization is that in double fertilization, the embryo sac and two sperm cells fuse, whereas the sperm nucleus and two polar nuclei fuse in the central cell of the embryo sac in the process of triple fusion.
238577
The GIFT technique follows nature by allowing the eggs to fertilize and develop in the natural environment of the fallopian tube, and then to make their way to the uterus for implantation according to a normal timetable. In contrast, in vitro fertilization (IVF) places fertilized eggs directly into the uterus.
118832
The key difference between IUI and IVF is that in IUI, fertilization takes place internally. That is, the sperm is injected directly into the woman's uterus. So, if fertilization is successful, the embryo implants there as well. With IVF, fertilization takes place externally, or outside of the uterus, in a lab.
1457722
It involves fertilizing an egg outside the body, in a laboratory dish, and then implanting it in a woman's uterus. By 2016, some 6.5 million babies had been born using in-vitro fertilization (IVF).
1277996
Human fertilization is the union of a human egg and sperm, usually occurring in the ampulla of the fallopian tube. The result of this union is the production of a zygote cell, or fertilized egg, initiating prenatal development.
521636
Following ovulation, the egg is capable of fertilization for only 12 to 24 hours. Contact between the egg and sperm is random. Once the egg arrives at a specific portion of the tube, called the ampullar-isthmic junction, it rests for another 30 hours.
1299660
The main difference between the two types of plant bodies involved in alternation of generations is that gametophytes produce gametes, and sporophytes produce spores. Essay: What is double fertilization? Double fertilization is the process in which one sperm fertilizes an egg and the other forms a triploid cell.
898557
Egg is fertilized in the Fallopian tube. It takes 3-4 days for the egg to get to the uterus. The fertilized egg (zygote) is called an embryo after it is implanted in the uterine lining.
697355
['Conception: From Egg to Embryo. ... ', 'Ovulation. ... ', 'Moving Into the Fallopian Tube. ... ', "The Sperm's Long Journey. ... ", 'Fertilization: Sperm Penetrates Egg. ... ', 'The Cells Start to Divide. ... ', 'Implantation. ... ', 'Pregnancy Hormones.']
751396
Fertilization: A Sperm and an Egg Form a Zygote They each contain half the genetic information necessary for reproduction. When a sperm cell penetrates and fertilizes an egg, that genetic information combines. ... The zygote starts to divide and multiply.
967024
To be sure, not every act of intercourse results in a pregnancy. First, ovulation (i.e., the monthly release of a woman's egg) must occur. Then, the egg must be fertilized. Fertilization describes the process by which a single sperm gradually penetrates the layers of an egg to form a new cell ("zygote").
1300644
The difference between internal and external communications: While internal communication takes place between staff within an organisation, external communication occurs between those within the company and those in the outside world.
1219364
Once the egg is released from the follicle, it's soon swept into the nearest fallopian tube by the fingerlike projections that form the end of the tube, where it will hopefully be fertilized. At ovulation, the follicle ruptures and the egg breaks through the surface of the ovary.
661226
Pulmonary ventilation is the movement of air into and out of the lungs (breathing). External respiration is the exchange of O2 (loading) and CO2 (unloading) between blood and alveoli (air sacs). ... Internal respiration is gas exchange between blood and tissue cells.
771180
A primary oocyte is produced after birth, while a secondary oocyte is produced before birth. A primary oocyte develops in both men and women, while a secondary oocyte develops only in women. A primary oocyte is the product of meiosis, while a secondary oocyte is the product of mitosis.