Identical twins are born when
1 Two sperms fertilise one ovum
2 Two perms fertilise two ovums
3 One sperm fertilizes two ovums
4 One sperm fertilizes the ovum and early during pregnancy
the zygote?s
cell mass divides into two separate parts, each developing
independently
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(4) One sperm fertilizes the ovum and early during pregnancy the
zygote?s cell mass divides into two separate parts, each
developing
independently
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