looks
They are as similar as any other two siblings.
No, the Roloff twins (Jeremy and Zachary) are not identical. As the Roloff's point out, Jeremy is average height, and Zach is a little person.
In the show they say nothing about Courtney but in the series they are identical twins.
greater than that between ordinary siblings reared together.
The first actress to play the part of identical twins was Hayley Mills in the original Parent Trap.
They are as similar as any other two siblings.
Identical twins would have the most genetic similarities, since they share the same original 46 chromosomes.
No. I have to really good friends that are identical twins. One is the "good, straight A student" and the other is the "bad, get into trouble" character, but they do have a lot of similarities; they are both athletic and they have the same sense of humor. So, not IDENTICAL attitudes, but similar.
Identical twins come from one egg and one sperm. Fraternal twins come from two eggs and two sperm.
Canada's first successful kidney transplant between identical twins was in 1958.
The difference between Identical and Non-Identical twins is that Identical twins share the same placenta and are basically identical to one another. Non-Identical twins do not share the same placenta in the womb and two eggs fertilized at time of conception as opposed to one egg splitting in the case of Identical twins. I think that covers the basics. Hope this has clarified things for you.
100%Identical twins develop from the same egg, so have the same DNA. The only thing different between identical twins is finger prints, and retinal patterns.
If two (or more) eggs are fertilised and develop together you will get fraternal twins. Identical twins are the result of a single fertilised egg dividing into two embryos.
The DNA of identical twins and of clones is, apart from random, environmentally produced mutations, 100% identical. The only difference is that clones are produced on purpose through advanced bioengineering techniques while identical twins happen as an accident of nature. Identical twins are, in a sense, natural clones.
Isograft
Identical twins. Although horses sometimes have twins I'm not sure if they have identical twins.
Identical twins have the same DNA - meaning that without the effects of environment they would be identical in every single way.