The ability to reproduce is one of the unifying
characteristics of all living things. Sexual reproduction produces offspring
that are genetically different from their parents.Asexual reproduction produces
offspring genetically identical to their parent.
In sexual reproduction new individuals are produced by the
fusion of haploid gametes to form a diploid zygote.
Sperm are male gametes, ova (ovum singular) are female
Meiosis produces cells that are genetically distinct from
fertilization is the fusion of two such distinctive cells.
Rotifers will reproduce asexually when conditions are
favorable by having females produce eggs by mitosis.When conditions
deteriorate, rotifers will reproduce sexually and encase their zygotes
inside a resistant shell. Once conditions improve, these eggs hatch into
diploid individuals. Rotifers thus use sexual reproduction as way to survive
a deteriorating environment.
Sexual reproduction offers the benefit of generating genetic
variation among offspring, which enhances the chances of the population’s
Costs of this process include the need for two individuals
to mate, courtship rituals, as well as a number of basic mechanisms