Distinguish between monozygotic and dizygotic twins
Answers
#Monozygotic twins, more commonly called “identical twins,” come from the same zygote (egg) fertilized by a single sperm. This fertilized egg then splits and produces two embryos which usually have identical chromosomes. Two fetuses will grow from the two embryos inside the same placenta.
Monozygotic twins have almost identical genes and the same blood type but they are still unique individuals.
#Dizygotic twins, also known as “fraternal twins,” are produced from two zygotes or fertilized eggs that are fertilized by two different sperm cells. In other words, dizygotic twins are somewhat similar to ordinary siblings except that the former are born at the same time. They do not share the same chromosomes.
Dizygotic twins are developed in two different amniotic membranes and placenta. They may share the same genes, but only 50% of them.
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Monozygotic Twins:-
1) Developed from a single egg which was fertilized by a single sperm cell.
2)Two fetuses grow in the same placenta.
3)Have almost identical genetic profile.
Always of the same sex.
4)May have the same physical and mental characteristics.
5)Also called “identical twins”.
Dizygotic Twins:-
1)Developed from two eggs fertilized by two different sperm cells.
2)Two fetuses grow in two different membranes.
3)Completely different genetic profile.
4)May be of the same or opposite sex
May look alike or different; may behave similarly or differently.
5)Also called “fraternal twins”.
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