twins
Fraternal twins can be the same sex or opposite sexes. It doesn't matter.
No. All identical twins are the same sex. Judith and Hamnet were opposite sexes, and so were fraternal twins.
Twins who are of the opposite sex or do not look alike are fraternal twins ~ not identical. This means that at the time of their conception ~ two eggs were fertilised. In the case od identical twins, one egg is fertilised and split in half.
No, monozygotic twins would be the same sex. Monozygotic twins come from one single fertilized egg, or zygote, which then splits to create two separate zygotes which will be genetically identical, or "identical twins", which will always be of the same gender.
there is no opposite. a zebra is a zebra.
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.
Heterosexual is to be attracted to the opposite sex
Gay/ Lesbian.
A male donkey is called a jack, a female a jenny.
No. The chances of them being the same sex are the same as if they were not twins at all.
If they weren't , they wouldn't be identical. Sometimes, even though they are the same sex, they do not look exactly alike. Similar, but not identical.
To chose not to have sex is to be celibate. To have no sexual interest is being asexual. The opposite sex is whatever sex you are NOT. If you are a male, females are the opposite sex, and vice versa.