Question

double fertilization in humaan

Answer 1

There is no double fertilisation in humans.
But some times the second polar body that is formed from the secondary oocyte fuses with another sperm.the ovum or ootid fuses with another sperm.So like this double fertilisation occurs but it is only a speculated phenomena.

Answer 2

Occasionally, two sperm are known to fertilize a single egg; this 'double fertilization' is thought to happen in about 1% of human conceptions. An embryo created this way doesn't usually survive, but a few cases are known to have made it — these children are chimaeras of cells with X and Y chromosomes.