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Why Can fraternal twins be different gender but identical twins are always the same gender?
fraternal twins have two different chromosomes
Can fraternal twins also be mirror twins?
Mirror Twins are always monozygote twins. This does not mean that fraternal twins won't be a righty and a lefty - if your family tends to run left handed.
Do conjoined twins have the same sex?
Yes. Conjoined twins are always identical (monozygotic) twins, and identical twins are always the same sex.There is a theoretical case where identical twins could be opposite genders, when the babies are female but in one of the females, a branch of one X chromosome breaks away; however, I don't believe this has ever been observed.
Are dizygotic twins always the same sex?
No. The chances of them being the same sex are the same as if they were not twins at all.
Do unidentical twins have the same skin colour?
Not always.
Bob on the job and rhymes like this?
twins we will always be....
Do dolphins always give birth to one baby?
Usually, but not Always. sometimes there are Twins.
Do identical twins always have the same father?
fraternal twins can have separate fathers.
Why can fraternal twins different genders but identical are always the same gender?
fraternal twins have two different chromosomes
Can conjoined twins be different gender?
Yes, conjoined twins can be different genders if they develop from fertilized eggs that did not fully separate during early development. This rare occurrence is known as dizygotic (fraternal) conjoined twins.
Do Fraternal Twins have similar minds like identical twins do?
Twins don't always think alike, whether they be identical, fraternal, or even simese. It depends on there personalities, not their looks.
Do twins have one amniotic sack or two for humans?
Fraternal twins always have two. About 1% of identical twins share an amniotic sack. 99% will each have their own sack.
