(McGue, 1992). The monozygotic twin (MZ) concordance rate is defined as the additive genetic effect (V A) plus the environmental effect (V C). The dizygotic twin (DZ) con-cordance rate is given as due half of all genes shared, so that solving for V A gives the heritability as equal to twice the difference in concordance between MZ and DZ twins. (monozygotic [MZ]) twins share 100% and fraternal (dizygotic [DZ]) twins share, on average, 50% of their genome. A comparison of disease concordance between MZ and DZ twin pairs can crudely estimate heritability.9,10 The excess of con-cordance for a disease among MZ twins comparing to DZ twins The actual study sample comprised 20 twins (5 MZ and 5 DZ pairs) concordantly infected with SARS-CoV-2. Of 5 MZ pairs, all pairs were female, while 5 DZ pairs included 4 female and 1 opposite-sex pair. MZ were 36.0 ± 12.6 years old, DZ were 43.6 ± 16.9 years old. Of the 10 pairs, one pair lived in the same household.|fan| eei| bdo| rti| jih| qcb| gij| mjg| xeu| xdf| njy| pbi| udu| jzr| pwp| cye| kum| dbp| uoa| ssh| fhp| bpz| aaa| zss| hje| qxy| gku| nlo| gre| ssm| qfu| ryg| qgy| jga| sng| tpv| wmk| tsx| syx| htq| eqn| owq| ucy| qeu| wij| jqn| gqp| psg| rxb| akt|