Pregnancy and Birth Defects

Pregnancy is when a male gamete (male reproductive cell-sperm) and a female gamete (female reproductive cell-egg or ova) meet. When the male and female gametes meet, this is called fertilisation. Within 38 hours, the sperm travels through the fallopian tubes to reach the egg in order to fertilise it and start making an embryo. The zygote (fertilised egg) then clings to the wall of the uterus, where the eggs can receive nutrients. The egg then grows over time and within nine months (forty weeks) the zygote turns into an embryo and the embryo turns into a baby, a living being!

In some cases the woman releases more than one egg, if both eggs are fertilised at once, the end result of this is Fraternal Twins. This is when both embryo attach themselves to the lining of the uterus and grow in sync. In the end result you can either have a boy and a girl or two of the same sex.
Identical Twins are when the zygote splits into two. Normally in this case the Identical Twins are the same sex.
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Birth Defects are either physical or mental disabilities which are either present at birth or a period of time after birth. Birth Defects can either be genetic or prenatal. Genetic Birth Defects is when a defect has been seen in the family tree beforehand. Prenatal Birth Defects are when the defect is unknown until a certain time after birth due to the Mother's actions or just because it happened. Birth Defects have become more recent over the last decade. Birth Defects can also be influenced by cigarette smoke, alcohol and other drugs as well as taking no care of the living organism, growing inside. The outside world also affects the way a baby is born in the way that the Mother could catch an illness and or could already have a disease. Mothers that have diseases that could threaten the baby should have already been warned by a practicing doctor.