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Identical twins are more likely to occur from a single fertilized egg splitting into two embryos, resulting in genetic duplicates. Fraternal twins result from two separate eggs being fertilized by two different sperm cells. Identical twins are not influenced by genetics or family history, whereas fraternal twins can be influenced by both maternal and paternal genetics.

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Mike and Mack are identical twins while Betty and Bonnie (unrelated to Mike and Mack) are fraternal twins. If Mike is affected by schizophrenia then which of following statements is most likely true?

Mack has a 49% better chance of developing the disease than the fraternal twins.


How Do Fraternal Twins Occur and Identical Twins Occur?

Fraternal twins (dizygotic twins) are simply two fertilized eggs that are implanted in the uterus at the same time. Identical twins (monozygotic twins) is one fertilized egg that separates into two embryos. In most cases, identical twins share one placenta, but have separate amniotic sacs. In some cases, they have two placentas. In rare cases, they share both the placenta and the amniotic sac.


What are the 2 kinds of twins?

Generally fraternal twins are more common. For fraternal twins to occur twins must diverge, but differentiate upon becoming separate entities. Identical twins are rarer, in which the two siblings are of the same gender and are exactly alike upon birth. Rarer so are conjoined, or "Siamese" twins. This occurs when twins are born partially or extremely fused together. There is only a 25% survival chance for a conjoined twin. Most were only connected by gristle and flesh, and could have been easily separated easily, were they in modern society.


How do twins look exactly alike?

They do look different! Even identical twins, with identical DNA, are different. Most have a slight difference in height and weight. Many people have a difficult time telling them apart because they are focusing on the wrong things. If someone looks only at the hair, they may not see that their faces are slightly different.


A brother and sister can be identical twins?

Yes and no, they are in the sense that both clones and Identical Twins do have the same DNA, however the way that the reproduction occurs in far different. Identical twins are "created" by a fertilized cell dividing in two forming two identical organisms. While clones go through a complex process, in which a nucleus is taken from a somatic (Body cell) and transplanted into a egg cell creating a new organism genetically identical to the firstHowever, Identical twins (nor are clones) aren't carbon copies of each other. Each twin goes through different environmental factors, so they are different people with different personalities and physical features.

Related Questions

What is the probability of a twin to have twins?

if twins run in the family u are more likely to have twins but most likely fraternal because identical twins are just a very unique coincidence


Why do you think identical twins were more alike than fraternal twins?

Fraternal twins share most of their genetic material, by virtue of having the same parents. Identical twins, however, by definition share 100% of their DNA. This means, for example, that identical twins cannot ever be one of each gender, as fraternal twins often are.


Mike and mack are identical twins while betty and bonnie are fraternal twins if mike is affected by schizophrenia then which of following statements is most likely true?

Mack has a 49% better chance of developing the disease than the fraternal twins


Who would have the most genetic similarities identical twins or fraternal twins?

Identical twins would have the most genetic similarities, since they share the same original 46 chromosomes.


Mike and Mack are identical twins while Betty and Bonnie unrelated to Mike and Mack are fraternal twins If Mike is affected by schizophrenia then which of following statements is most likely true?

Mack has a 49% better chance of developing the disease than the fraternal twins.


Are quadruplets always identical or always fraternal or can they be either?

Quads can be identical, fraternal, or a pair of identical twins. Identical quads are rare- that would require 1 egg divide into 2, and then divide again into two. Most quads are fraternal.


Mike and Mack are identical twins while Betty and Bonnie (unrelated to Mike and Mack) are fraternal twins. If Mike is affected by schizophrenia then which of following statements is most likely true?

Mack has a 49% better chance of developing the disease than the fraternal twins.


How Do Fraternal Twins Occur and Identical Twins Occur?

Fraternal twins (dizygotic twins) are simply two fertilized eggs that are implanted in the uterus at the same time. Identical twins (monozygotic twins) is one fertilized egg that separates into two embryos. In most cases, identical twins share one placenta, but have separate amniotic sacs. In some cases, they have two placentas. In rare cases, they share both the placenta and the amniotic sac.


Do most pregnancies start out as twins?

No, most pregnancies do not start out as twins. When the ovaries release two eggs and both are fertilized then will twins be born (fraternal/nonidentical twins). Or a fertilized egg may divide before implantation resulting in identical twins.


What are the 2 kinds of twins?

Generally fraternal twins are more common. For fraternal twins to occur twins must diverge, but differentiate upon becoming separate entities. Identical twins are rarer, in which the two siblings are of the same gender and are exactly alike upon birth. Rarer so are conjoined, or "Siamese" twins. This occurs when twins are born partially or extremely fused together. There is only a 25% survival chance for a conjoined twin. Most were only connected by gristle and flesh, and could have been easily separated easily, were they in modern society.


How do twins look exactly alike?

They do look different! Even identical twins, with identical DNA, are different. Most have a slight difference in height and weight. Many people have a difficult time telling them apart because they are focusing on the wrong things. If someone looks only at the hair, they may not see that their faces are slightly different.


Are mullage twins?

Mullage twins, often referred to as "semi-identical twins," are a rare type of twins that occur when a single fertilized egg splits into two embryos but also shares some genetic material. This results in twins that are genetically similar like identical twins, but not completely identical. This phenomenon is extremely uncommon, and most twins are either fraternal (dizygotic) or identical (monozygotic). The unique genetic makeup of mullage twins can lead to interesting medical and biological implications.