After puberty, the ovaries release one egg each month alternatively.
The sperms enter through the vagina, travel upwards to the oviduct where they encounter the egg.
If the egg is fertilized, a zygote is formed. The zygote repeatedly divided to form the embryo. This embryo trickles down to the uterus. On the uterine wall, the embryo gets implanted.
The embryo gets nutrition form a special disc shaped tissue towards the uterine wall called the placenta. It contains villi on the embryo's side and provides nourishment and oxygen from the mother's blood. Waste substances such as carbon dioxide and nitrogenous wastes are taken away from the embryo.
After the 9 month gestation period, the child is delivered as a result of rhythmic contractions of the uterus.
Fertilization that happens outside the female body is called in-vitro fertilization. In this procedure, the ova is fertilized with the sperm in a laboratory.
The lining of the uterus breaks down and is shed during menstruation if fertilization does not occur.
Yes, meiosis is necessary before fertilization can occur because meiosis is the process by which gametes (eggs and sperm) are formed. During meiosis, the cell's chromosome number is halved, so that when the egg and sperm fuse during fertilization, the resulting zygote will have the correct number of chromosomes.
Within two weeks of fertilization, the fertilized egg undergoes cleavage and forms a blastocyst, which implants into the uterine wall. The blastocyst begins to develop into different cell layers and structures that will eventually form the embryo. Hormonal changes also occur to support the pregnancy.
If the egg cell and sperm cell meet in the ovary, fertilization can occur. This is the start of the process that leads to the formation of a zygote, which will eventually develop into an embryo and then a fetus.
Fertilization can happen either inturnaly in a fish that produces both eggs and sperm or exturanly with a fish that produces on sperm.
If the sperm cannot get into the egg, fertilization cannot occur and pregnancy will not take place. The egg needs to be fertilized by the sperm in order for the genetic material from both to combine and form a zygote, which will eventually develop into an embryo.
If syngamy does not occur, fertilization would not take place, preventing the fusion of genetic material from the sperm and egg. This would result in the inability to form a zygote, which is needed for the development of a new organism. As a result, no new individual would be formed.
Water would be the number one choice.
It would become extinct.
Fertilization that happens outside the female body is called in-vitro fertilization. In this procedure, the ova is fertilized with the sperm in a laboratory.
When a male human sperm is introduced into a female dog's body, it is highly unlikely that fertilization will occur. This is due to the genetic differences between humans and dogs, which make cross-species fertilization extremely rare. Even if fertilization were to occur, the resulting offspring would likely not survive due to the differences in genetic compatibility and gestational requirements between humans and dogs.
Fallopian Tubes
ovary
"Occur" would work, however, happen is appropriate in most situations.
There would be no sexual reproduction.
There would be no sexual reproduction.