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ShareThe term twin most notably refers to two individuals (or one of two individuals) who have shared the same uterus (womb) and are usually, but not necessarily, born on the same day.
Twins can be fraternal or identical.
For more information about the topic Twin, read the full article at Wikipedia.org, or see the following related articles:
Multiple birth — Twins, triplets and other multiple births occur with to varying degrees in most animal species. The most common form of human multiple birth is twins ... > read more
Conjoined twins — Conjoined twins are twins whose bodies are joined together at birth. This happens where the zygote of identical twins fails to completely separate. ... > read more
Breech birth — A breech birth (also known as breech presentation) refers to the position of the baby in the uterus such that it will be delivered buttocks first as ... > read more
Heritability — In genetics, heritability is the proportion of phenotypic variation in a population that is due to genetic variation. Variation among individuals may ... > read more
Premature birth — Premature birth (also known as preterm birth) is defined medically as childbirth occurring earlier than 37 completed weeks of gestation. Most ... > read more
Birth weight — Birth weight is the weight of a baby at its birth. It has direct links with the gestational age at which the child was born and can be estimated ... > read more
Pregnancy — Pregnancy is the carrying of one or more embryos or fetuses by female mammals, including humans, inside their bodies. In a pregnancy, there can be ... > read more
Menopause — Menopause (also known as the "Change of life" or climacteric) is a stage of the human female reproductive cycle that occurs as the ovaries stop ... > read more
Transplant rejection — Transplant rejection occurs when the immune system of the recipient of an transplant attacks the transplanted organ or tissue. This is because a ... > read more
Childbirth — Childbirth (also called labour, birth, partus or parturition) is the culmination of a human pregnancy with the emergence of a newborn infant from its ... > read moreNote: This page refers to an article that is licensed under the GNU Free Documentation License. It uses material from the article Twin at Wikipedia.org. See the Wikipedia copyright page for more details.
Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.
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