Pertaining to or derived from two ova.

= monovular, adj.

resulting from or pertaining to heterozygosis.

Of twins or other multiple births: derived from a single fertilized ovum.

Of a twin: monozygotic.

of or pertaining to homozygosis; homozygous.

Of twins: derived from two separate ova (and therefore not identical).

Biology and Medicine. = monozygotic, adj.

Derived from a single (fertilized) ovum; = monozygotic, adj.

= dizygotic, adj.

= monozygotic, adj.

= dizygotic, adj.