Question

why do egg splits while formation of twins​ babies??

Answer 1

Answer
Twin babies are formed when a sperm fertilizes an ovum which forms the zygote.
When zygote is formed it starts splitting into 2 equal and different parts this is how Twins are formed.



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Answer 2

Because the fertilised egg divides into two while still a small collection of cells, this happens.

• The two self-contained halves then grow into identical twins.
• Identical or'monozygotic' (one-cell) twins are twins that are conceived from one egg and one sperm.
• The biochemical mechanisms that cause a single fertilised egg to divide in two are unknown.
• Approximately one-quarter of identical twins are mirror copies of one another, meaning one child's right side mirrors their twin's left side.