What Comes After Zygote
This zygote like the organism above will divide many times to create all of the cells of our body. These chromosomes are carried in the haploid gamete cells sperm and eggs.
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Pregnancy usually lasts 40 weeks beginning from the first day of the womans last menstrual period and is divided into three trimesters each.
What comes after zygote. But Aristotle 384 322 BC held that only male semen gave rise to an embryo while the female only provided a place for the embryo to develop a concept he acquired from the preformationist PythagorasAristotle believed a fetus in early gestation has the soul. One half of each pair comes from our mother while the other comes from our father. Short of medically implanting an embryo that is known to be a boy there are no guarantees when it comes to the sex of your baby.
When a sperm meets an egg fertilization occurs and a diploid organism is formed. In general there is approximately a. Pregnancy Definition The period from conception to birth.
After the egg is fertilized by a sperm and then implanted in the lining of the uterus it develops into the placenta and embryo and later into a fetus. After fertilization the ovule develops into a seed containing the embryo. The resulting zygote then gives rise to an embryo which will grow into a new diploid individual.
In seed plants a structure called the ovule contains the female gametophyte. Among Greek scholars Hippocrates c460 c370 BC believed that the embryo was the product of male semen and a female factor. The gametophyte produces an egg cell.
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