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How is a fraternal twin different than other twins?
Fraternal means "brother-like." Identical twins result from a single fertilzed egg dividing into two separate embryos so the twins share all DNA. Fraternal twins result from two different eggs being fertilized by two different sperm at the same time. The babies are then born at the same time, but only share 25%of their DNA with each other, which is the same amount that siblings born at different times share. The word fraternal used in social organizations, like "the fraternal order of"...refers to the thought that the members are like brothers to each other. Modern french uses the word frere to mean brother.
How do identical and fraternal twins develop?
Identical twins form from the same fertilized egg (zygote). When the zygote has divided a few times and formed a ball of cells, something causes this embryo to split in two. Each half then goes on to develop into a person. So the twins have identical genes. A technical name for such individuals is monozygotictwins.Fraternal (or dizygotic) twins develop from two zygotes, formed from two different eggs (ova) fertilized by two different male gametes (sperms). So they are not necessarily any more alike than any other siblings.
What is the difference between negative and positive blood types?
Negative and Positive blood types refer to the presence of the Rhesus D (RhD) antigen. Rhesus is the second main blood group typing after the A,B,O system. e.g. AB+ means the blood cells have A and B and RhD antigens present on the blood cell surface. O- means that A and B and RhD antigens are not present on the surface of the blood cell.
What does the initials rh stand for in blood types?
The initials "Rh" stand for Rhesus factor, which is a protein found on the surface of red blood cells. This factor is important in blood typing, as individuals who have the Rh protein are considered Rh positive (Rh+), while those who do not have the protein are considered Rh negative (Rh-).
What types of receipients can receive Type B blood?
Type O or type A broadly speaking. it also depends on other proteins found on the surface of donated blood cells such as rhesus proteins. someone can be rhesus plus or rhesus minus meaning they either have the protein or don't. You can only receive blood of the same rhesus type of as your own for example: A rhesus positive can only receive A rhesus positive or O rhesus positive
How may types of twins are there and which type may have different sex?
There are two types of twins -- monozygotic ("identical") from a single egg, and dizygotic (fraternal) from two eggs. Only dizygotic twins can have a different sex.
What are the three types of twins?
There is Identical twins, Nonidentical twins and Conjoined twins.
How many different kid of twins are there?
there are two types of twins-- fraternal and identical. Fraternal twins are genetically unique, and they usually have physical differences. Identical twins are identically identical, such as a clone, and have exact physcial characteristics, excluding weight and scars etc.
What kinds of twins are there?
Identical and Fraternal There are identical and fraternal. Fraternal twins happen when 2 different embryos start growing at the same time, so you get a brother and a sister or 2 sisters or 2 brothers that are the same age. Identical twins happen when 1 embryo splits into 2 embryos when it is only a few cells big, so both babies have the same genes.
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.
How do you know if two twins are identical or just fraternal twins that look a lot alike?
(Person that asked the question)-Once twins are born, and old enough to determine whether they are identical or fraternal, how do you know if they are identical, or just fraternal twins that look identical? I was just curious.
How many different types of babies can you have?
boy, girl and simese twins Siamese twins are now properly called conjoined twins. You can have identical twins[ same sex] , fraternal twins [ one male , one female ]. triplets, same way, quadruplets, quintuplists , sextuplets and so on , with fertility drugs.
Are there any twins?
Identical twins are formed when an egg fertilised by a sperm splits in half to form two different embryos.
How is a fraternal twin different than other twins?
Fraternal means "brother-like." Identical twins result from a single fertilzed egg dividing into two separate embryos so the twins share all DNA. Fraternal twins result from two different eggs being fertilized by two different sperm at the same time. The babies are then born at the same time, but only share 25%of their DNA with each other, which is the same amount that siblings born at different times share. The word fraternal used in social organizations, like "the fraternal order of"...refers to the thought that the members are like brothers to each other. Modern french uses the word frere to mean brother.
What is a brother who has the same mother but different father?
If it is in the same menstrual cycle, it is called superfecundation. If it is later in the pregnancy it is called superfetation. They would still be fraternal twins even with different fathers (that is, half-siblings). This is known as heteropaternal superfecundation. More unusual are "semi-identical twins". These "half-identical twins" are hypothesized to occur when an unfertilized egg cleaves into two identical attached ova and which are viable for fertilization. Both cloned ova are then fertilized by different sperm and the coalesced eggs undergo further cell duplications developing as a chimeric blastomere. If this blastomere then undergoes a twinning event, two embryos will be formed, each of which have different paternal genes and identical maternal genes. More interesting is what the mother of these types of twins would be called.
Do identical twins have the same blood type?
Identical twins do have the same blood group, because they have the same DNA. One egg and one sperm create two people. Fraternal twins may not have the same, though they could, because they have different sets of DNA. Two different eggs, two different sperm, two different people.
How can you improve the chances of having twins?
There are two primary types of twins, Identical and Fraternal. Identical twins occur when the egg splits after fertilization. To date no indication of a genetic link has been found. Anyone has a chance, though small, of having identical twins. Fraternal twins occur when more than one egg is dropped during ovulation. This trait can be inherited from the mother's side of the family. Studies have shown that the chances are also increased by being overweight or older.
