The fertilized egg enters a 2-week period of cell division. during this period, the fertilized egg is known as an embryo.
Following sexual intercourse, sperms move from the vagina via the cervix and uterus to the fallopian tubes, where only a single sperm fuses with the egg.
The fertilized egg or the zygote divides constantly as it travels down the fallopian tube to the uterus. Initially, the zygote is transformed into a solid ball of cells after which it changes into a hollow ball of cells i.e. a blastocyst.
The blastocyst gets embedded in the wall of the uterus, where it evolves into an embryo connected to a placenta and enclosed by fluid-filled membranes.
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The central nervous system is what connects your spinal cord to your brain and the rest of your body.
Answer:
If a person has extra chromosome you or they might have down syndrome
Explanation:
Normally a baby inherits 23 chromosome from each parent which is equal to 46 total and basically those who survive develop down syndrome
