Sometimes it’s possible to know if same-gender twins are identical or fraternal during pregnancy. ... Mirror imaging features may vary for each set of identical twins. Polar body twins.

Interestingly, there are times when identical twins will sometimes look slightly different, even though they have the same genetic makeup. This phenomenon is usually related to environmental ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d ...

JAKARTA, Indonesia (CNN)-- An Indonesian mother has given birth to conjoined twins who share the same body and all their vital parts -- except their heart and their heads.

Curious Kids is a series for children of all ages. If you have a question you’d like an expert to answer, send it to [email protected]. Allergies, whether spring sneezes due to ...

But twins aren't automatically allergic to the exact same things. Imagine if two twins are separated at birth and raised in different homes: one on a farm with pets and one in the inner city.

Identical, or monozygotic, twins develop from the same fertilized egg that splits into two. These twins are the same sex and share the same genes. Sometimes called paternal twins, identical twins ...

But twins aren't automatically allergic to the exact same things. Imagine if two twins are separated at birth and raised in different homes: one on a farm with pets and one in the inner city.

But twins aren’t automatically allergic to the exact same things. Imagine if two twins are separated at birth and raised in different homes: one on a farm with pets and one in the inner city.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Curious Kids is a series for children of all ages. If you have a question you’d ...