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The fertilized egg is divided into two fertilized eggs, and they both become twins.
If the twins, triplets -- are identical, then they have developed from a single egg, which split into two (or three).If the multiple birth infants differ, then there were two (or three -- ) eggs released and fertilized at the same time.There are proper terms for these multiple births - have a crack at wikipedia.
hearing is the most developed sense at birth;vision is the least
No, but they will cause severe birth defects.
on how long it take.some animals to give birth on lay eggs after fertilization
King Herod
Marsupials give birth to partially developed young - examples: kangaroos, wombats, opossums, koalas.
Families in developed nations have lower birth rates than families in non-developed nations because of the accessibility of birth control process, the position of woman in society and the admission to education.
Pregnancy is the process of carrying a fetus for nine months. Birth is the process of delivering a baby. Conception is when the egg is fertilized.
Christianity
eyes
Two egg cells are each fertilized by separate sperm cells.