Monozygotic twin
= Monozygotic twin
{title2=MZ twin}
This is the single-zygote subtype of a <twin>.
<Monozygotic twins> develop from one zygote and are modeled as sharing essentially all additive <genetic variation>.
= Monozygotic twin
{title2=MZ twin}
This is the single-zygote subtype of a <twin>.
<Monozygotic twins> develop from one zygote and are modeled as sharing essentially all additive <genetic variation>.