dizygotic


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Related to dizygotic: monozygotic

dizygotic

 [di″zi-got´ik] ()
pertaining to or derived from two separate zygotes (fertilized ova); said of twins. See also monozygotic.

di·zy·got·ic

, dizygous (dī'zī-got'ik, dī-zī'gŭs),
Relating to twins derived from two separate zygotes, that is, bearing the same genetic relationship as full sibs but sharing a common intrauterine environment.
[G. di-, two, + zygotos, yoked together]

dizygotic

/di·zy·got·ic/ (di″zi-got´ik) pertaining to or derived from two separate zygotes.

dizygotic

(dī′zī-gŏt′ĭk) or

dizygous

(dī-zī′gəs)
adj.
Derived from two separately fertilized eggs. Used especially of fraternal twins.

dizygotic

[dī′zīgot′ik]
Etymology: Gk, di, twice, zygotos, yolked together
pertaining to twins from two fertilized ova. Compare monozygotic. See also twinning.

di·zy·got·ic

, dizygous (dī-zī-got'ik, dī-zī'gŭs)
Relating to twins derived from two zygotes but sharing a common intrauterine environment.
[G. di-, two, + zygotos, yoked together]

dizygotic

Derived from two separately fertilized eggs (ova). The term is used especially to refer to non-identical twins. Distinguished from monozygotic twins, who are derived from a single fertilized ovum and are identical.

dizygotic

fraternal twins, formed by simultaneous fertilization of two separate eggs

dizygotic, dizygous

pertaining to or derived from two separate zygotes (fertilized ova); said of twins.
References in periodicals archive ?
A case of dizygotic embryos arising from a single yolk has been shown to be a rare occurrence (Levi 1957, Astheimer and Grau 1985).
Examining differences in the levels and activity states of these components within pairs of monozygotic and dizygotic twins, the Stanford scientists found that in three-quarters of the measurements, nonheritable influences -- such as previous microbial or toxic exposures, vaccinations, diet and dental hygiene -- trumped heritable ones when it came to accounting for differences within a pair of twins.
However, probandwise concordance rates for dizygotic pairs were higher than previously reported, at 21 % for 31 male pairs and 27% for 10 female pairs.
1986) Aerobic performance in brothers, dizygotic and monozygotic twins.
Monozygotic concordance rates range from 36% to 91% (versus dizygotic concordances of 0%-23%), and overall autism spectrum heritability rates are estimated to be as high as 90%.
dizygotic (0%-10%) twin concordance rates, (1) widely varying phenotypic expression even among monozygotic twins, (2) striking male/female ratio (~3:1), apparent increased prevalence in African Americans, and apparent rapid increase in incidence rates over the last 20 years.
In studies of male twins, monozygotic twins (single egg) are more likely than are dizygotic twins (two eggs fertilized by two different sperm) to be concordant for homosexuality.
PTSD was twice as prevalent in monozygotic twins, being noted in 20 percent, while it was observed in only 7 percent of dizygotic twins [115].
This is consistent with twin studies of monozygotic and dizygotic twins provide that some evidence that BPD has a genetic component, such as heritability rates of greater than .
For example, in studies of monozygotic (MZ) and dizygotic twins, there is little difference between the concordance and disconcordance rates for handedness (Neale, 1988).