Describe the development process process of a zygote?
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To penetrate the egg, the acrosome (Sac containing enzymes) of the sperm releases an enzyme to disperse the follicle cells and break down part of the egg membranes for the sperm to enter.
Only one sperm nucleus enters the egg. The haploid sperm nucleus fuses with the haploid egg nucleus, and a fertilised egg or diploid zygote is formed.
As soon as the sperm has entered the egg, the membrane of the egg changes so that no other sperm can enter. The remaining sperms, which do not fertilise the egg, eventually die.
The cilia lining the oviduct sweep the zygote along the oviduct. Peristaltic movements also help move the zygote to the uterus. The zygote divides by mitosis to form a hollow ball of cells called the embryo.
Only one sperm nucleus enters the egg. The haploid sperm nucleus fuses with the haploid egg nucleus, and a fertilised egg or diploid zygote is formed.
As soon as the sperm has entered the egg, the membrane of the egg changes so that no other sperm can enter. The remaining sperms, which do not fertilise the egg, eventually die.
The cilia lining the oviduct sweep the zygote along the oviduct. Peristaltic movements also help move the zygote to the uterus. The zygote divides by mitosis to form a hollow ball of cells called the embryo.
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