PHYSIOLOGY
REPRODUCTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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two eggs fertilised
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fertilized egg splits
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two identical eggs are released
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two identical sperm fertilize the egg
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Detailed explanation-1: -To form identical or monozygotic twins, one fertilised egg (ovum) splits and develops into two babies with exactly the same genetic information. To form fraternal or dizygotic twins, two eggs (ova) are fertilised by two sperm and produce two genetically unique children.
Detailed explanation-2: -Identical (monozygotic) twins happen when a single egg (zygote) is fertilised. The egg then divides in 2, creating identical twins who share the same genes. Identical twins are always the same sex, so if your twins are identical, you’ll have 2 girls or 2 boys.
Detailed explanation-3: -In humans, twins can result either from the ovulation and fertilization of two oocytes with the outcome of dizygotic twins (DZT) or from the splitting of a single embryo at some stage of its early development, resulting in monozygotic twins (MZT).