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zhuklara [117]
3 years ago
12

A woman gives birth to quadruplets or four infants. two of her children are identical twins. the other two are fraternal twins.

how could this have happened
Health
1 answer:
cricket20 [7]3 years ago
4 0
To explain this, let's go back to the fertilization:
The identical twins are formed by an association of one spermatozoid and one ovule to form an egg. this egg will start growing and suddenly divide into 2 eggs, to give afterward 2 individual with the same genes.
The fraternal twin comes from two different spermatozoids which will fertilize one ovule each, and give 2 different individuals sharing half of their genes.

In this case, both phenomena happened. It means there were three spermatozoids fertilizing one ovule each. And one of the eggs divided into 2 eggs. it ended by 2 <span>eggs which are different and 2 eggs which came from the same one.</span>
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