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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.
Can conjoined twins be different gender?
Nature has various safety valves. That is one of them. Conjoined Twins are identical twins with a natural connective bond, therefore they always take the same sex. Fraternal twins, like the fictional Bobbseys, can be Boy and Girl.
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.
Bob on the job and rhymes like this?
twins we will always be....
Do unidentical twins have the same skin colour?
Not always.
Do dolphins always give birth to one baby?
Usually, but not Always. sometimes there are Twins.
Why can fraternal twins different genders but identical are always the same gender?
fraternal twins have two different chromosomes
Do identical twins always have the same father?
fraternal twins can have separate fathers.
Are identical twins always the same size and birth weight?
No
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.
