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Twin study


Twin studies reveal the absolute and relative importance of environmental and genetic ... By comparing many hundreds of families of twins, researchers can then understand ..... This tendency may run...

Is it true that giving birth to twins runs in families? | BabyCenter


Find out whether the tendency to conceive twins is an inherited trait that runs in ... cycle (hyperovulation) is a genetic trait that can be passed from mother to child.

Do twins run in families? - Health questions - NHS Choices


However, non-identical twins can run in families. ... Some women may be genetically more likely to produce more than one egg during a menstrual cycle ...

The Twin Gene - Do Twins Run in Families? - Verywell


May 5, 2016 ... Find out if twins run in families with this explanation of the genetic connection ... Hyper ovulation is the tendency to release multiple eggs during ...

Do Twins Run in Families? Understanding the connection between ...


Apr 7, 2013 ... I often get emails inquiring, "My grandmother's uncle was a twin. ... Hyper ovulation is the tendency to release multiple eggs during ovulation, ... Fraternal twins "run in families" on the mother's side only, if she inherits the gene ...

How do twins work? - Quora


For reason unknown, having fraternal twins run in families, both from the ... the tendency to ovulate more than one egg at a time does tend to run in families, ... produce multiple eggs -- a trait that is inheritable -- fraternal twins can "run in the  ...

Identical twins - how do the happen, chances and risks of identical ...


Identical twins do not run in families and can happen for any couple with any ... to luck, coincidence and chance rather than any familial genetic tendency.

human biology - Do twins "run in the family"? - Biology Stack ...


Aug 27, 2012 ... Are the genes for twinning very rare or do they just rarely produce twins? ... However, because fraternal twins can be the result of a gene on the ...

Genetics and Your Baby - Parents


... gene combinations, one pair of parents has the potential to produce 64 trillion different children. ... Fingerprint patterns have been shown to run in families. ... For instance, a child may inherit the tendency to jump into risky activities (a ... One twin can die in utero, or a woman can miscarry both twins so early in pregnancy ...

Boy or girl? It's in the father's genes - Phys.org


Dec 11, 2008 ... "The family tree study showed that whether you're likely to have a boy or a girl is inherited. ... baby girl (XX) and a Y chromosome will combine with the mother's to make a boy (XY). .... Specifically, the tendency to produce female offspring must come from ... My mom's brother had 6 sisters, he had tw...

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Twins - Understanding Genetics - The Tech Museum of Innovation


Jun 25, 2014 ... My husband has on his side of the family twins (fraternal) and triplets - boys. Is our son ... On the other hand, fraternal twins can run in families.

Do genes influence whether someone has twins, either identical or ...


Mar 18, 2002 ... There is no doubt that twinning seems to run in some families. ... on the chance of twins, although he can pass the tendency to his daughters.

Causes of Identical Twinning - Twinslist.org


Identical twins in almost all cases do not run in families. .... That is supposed to be a genetic tendency that can be passed from mother to daughter. ..... Which would mean that more women hyperovulate than men who produce this enzyme.