Page 13 - B2Z 012 Different types to twins

Polar twins result from one egg

that splits and each respective

egg is then fertilised by a

unique sperm.

On the other hand,

sezquizygotic twins result when

two distinct sperm fertilise a

single egg and, then, the egg

splits.

In both of these instances, the

semi-identical twins possess the

exact same maternal genes, but

inherit different paternal genes.