differentiate monozygotic and dizygotic twin formation
Answers
Explanation:
Monozygotic twins are produced from the same zygote, that is, a single zygote divides to give rise to two embryos. They are usually identical. Dizygotic twins are formed when a female releases two eggs that are fertilized by two different sperms and result in the formation of two zygotes, and eventually two embryos
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Answer:
Monozygotic twins, also known as identical twins, develop from one egg fertilized by one sperm. The frequency of monozygotic twins is around 1 in 250 pregnancies without assisted fertility.
Identical twins begin as a single egg that has been fertilized by a single sperm. From that beginning, the egg will split into two. Depending on how early the split happens, monozygotic twins may or may not share the same placenta (monochorionic) and same amniotic sac (monoamniotic).
If the egg splits between days 0 and 3, the twins will have separate placentas (dichorionic) and amniotic sacs (diamniotic).
If the egg splits between days 4 and 8, the twins will share the same placenta and have separate amniotic sacs.
If the egg splits between days 9 and 12, the twins will share the same placenta and amniotic sac.
If the egg splits after 13 days, the twins will be conjoined.
Identical twins are always the same sex and have a lot of the same DNA. However, this does not mean they are exactly the same. They may not look exactly alike and will develop into individuals with differing tastes and experiences.
Although monozygotic twins often share a special bond, experts and parents of twins feel that it is important to raise twins with an awareness of their individuality. For example, you can celebrate birthdays with individual birthday cakes. Identical twins should also be allowed to dress differently from one another if they want to. Parents of twins should also consider pointing out what makes each twin unique.