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do identical or non identical twins share the same placenta
Identical twins are formed when one fertilized eggs splits. Non-identical twins are formed when two separate eggs are fertilized.
Non-identical twins are represented on a pedigree chart with a sign thata looks like this: / or called a slash!!! ;)
Meiosis happens twice to create FOUR non-identical cells. If it only happened once, only TWO non-identical cells would be made. When it happens twice, FOUR non-identical cells are made.
The difference between Identical and Non-Identical twins is that Identical twins share the same placenta and are basically identical to one another. Non-Identical twins do not share the same placenta in the womb and two eggs fertilized at time of conception as opposed to one egg splitting in the case of Identical twins. I think that covers the basics. Hope this has clarified things for you.
Non-identical twins are when 2 sperm cells fertilize two different eggs during the same pregnancy.
Non identical twins are formed when the mother releases two eggs and both those eggs are fertilised. hope this helps :)
the egg divides
Fraternal twins
Fraternal twins
Fraternal twins.
having non identical alleles r called dne mix ups. i hope this helped u!! good luck!