Can fraternal twins be the same gender
The normal period of gestation is around 40 weeks for single child.Monozygotic twins share the same genetic origins, while dizygotic twins share about 50 percent of their genetic traits.Fraternal twins happen, when two eggs grow at the same time and both get fertilized.The term mz twins simply means that the twins came from the same zygote.Since fraternal twins originate from two separate sperm, each of those eggs could be a boy or girl.
Sometimes, doctors identify same sex twins as fraternal or identical based on ultrasound findings or by examining the membranes at the time of delivery.After the egg splits, the two embryos will have the xy chromosome and will both be males.Dizygotic twins are as similar to each other as siblings in.Fraternal twins share about half of their dna.Since fraternal twins are the result of different eggs and different sperm, they share the same percentage of chromosomes as any other siblings.
They are both twin types, true, but otherwise they are very different from one another.Identical twins (monozygotic), on the other hand, are always of the same gender.Monozygotic twins, on the other hand, are always the same gender, either two girls or two boys.Fraternal twins are dizygotic twins, where two eggs are released by the female which are fertilized by two different sperms from the male.Only about 1/3 of twins are identical while 2/3 are fraternal, making identical twins the rarer of the two.
That means fraternal twins can both be boys, both be girls, or be a boy and girl.Yes, they can be both boys or both girls.Fraternal twins (dizygotic) come from their own egg and sperm share about 50% of dna may look very different can be a boy and girl, or the same gender identical twins (monozygotic) come from a single egg and sperm that splits into two have same dnaIdentical twins are always boy/boy or girl/girl.Monozygotic twins, however, are always the same gender.
They may not look alike since they only share 50% of the dna and have different eye colour, stature, and hair colour.So the two types of twins are different on a biological level.
