Question

explain the development of zygote to foetus​

Answer 1

Answer:

A zygote is the union of the sperm cell and the egg cell. Also known as a fertilized ovum, the zygote begins as a single cell but divides rapidly in the days following fertilization. After this two-week period of cell division, the zygote eventually becomes an embryo. If this goes well, the embryo becomes a fetus.

Answer 2

Answer:

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Explanation:

》In order for reproduction to take place, a single sperm cell must penetrate the outer surface of an egg. In most cases, a single egg cell is released during the ovulation phase of a woman's monthly reproductive cycle. Normally, thousands of sperm attempt to penetrate this single egg cell. Once a single sperm has broken through the outer surface, chemical changes in the surface of the egg prevent other sperm from entering.

》This process usually happens during sexual intercourse, although medically assisted fertilization is also possible. Intrauterine insemination (IUI) and in vitro fertilization (IVF) are two commonly used assisted reproductive techniques.

》During an IUI, semen is inserted into the uterus using a catheter so that fertilization takes place inside the woman's body. In IVF ( INVTRO FERTILISATION )eggs are removed from the ovaries and fertilized in a lab.2 The zygote is then implanted in the uterus.

The zygote divides through a process known as mitosis, in which each cell doubles by dividing into two cells. This two-week stage is known as the germinal period of development and covers the time of conception to the implantation of the embryo in the uterus.

》A baby goes through several stages of development, beginning as a fertilized egg. The egg develops into a blastocyst, an embryo, then a foetus .

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