Identical twins are formed due to the
division of one fertilized female gamete
resulting in two offspring that look
identical. On the other hand, fraternal
twins are formed due to the fusion of two
different male gametes with two different
female gametes at the same time.
Fraternal twins possess different
genotype, and they resemble in physical
appearance but are not identical.
How is it possible that fraternal twins
could end up with different skin colors
even though they have the same
parents?
Mitosis, a process vital for
growth and repair, creates
genetic variation between
fraternal twins.
Genetic variation occurs between
fraternal twins due to the
crossover of genes during phases
of meiosis.
Meiosis leads to greater genetic
variation because all
chromosomes come from one
parent.
Mitosis will lead to greater
genetic variation as mutations
will give rise to new traits in