Download Types of Reproduction

Types of Reproduction
Asexual Reproduction
 Asexual reproduction occurs when a new organism is
produced from one parent.
 The genetic material of the new organism is identical to
the genetic material of the parent.
 So, the offspring and the parent have all the same traits.
 Organisms that are smaller and less complex are more
likely to reproduce asexually.
 Single-celled organisms like bacteria and protists
reproduce asexually.
 Many plants and fungi can reproduce asexually as well.
 A few animals can reproduce asexually.
Three types of Asexual Reproduction
Budding
Regeneration
Fission
Budding
Budding is the process when a new organism
begins to form on the side of the parent and
eventually breaks off.
Budding is most common in plants and fungi.
Regeneration
 Regeneration is the ability to restore lost or damaged
tissues, organs, or limbs. It is most common in animals
that do not have a backbone (invertebrates) like worms
and starfish.
 Sometimes, if an organism loses a limb or if the organism
is split into two parts, both parts will regenerate the
missing pieces, creating two organisms from one.
Binary Fission
 Binary fission occurs when a singlecelled organism splits into two cells.
 Bacteria and protest reproduce by
binary fission.
 First the parent cell makes a copy of
its genetic material, then the cell
membrane pinches in and two new
daughter cells split apart.
 Because the cell copied its genetic
material, the two cell have the same
traits.
Sexual Reproduction
 Sexual reproduction requires two parents.
 The female parent provides the egg cell, and the male
parent provides the sperm cell.
 The egg cell and the sperm cell combine to form a new
individual.
 The egg cell has genetic material from the female parent
and the sperm cell has genetic material from the male
parent.
 Therefore, the offspring will have genetic material from both
parents, which is called genetic variation.
 Sexual reproduction allows new individuals to have genetic
variation because they get a mix of traits from two parents.
Pollination
 Pollination is a form of sexual reproduction.
 Pollination occurs in plants.
 Pollen is taken from the male parts of one plant and
delivered to the female parts of another plant, usually
by an insect.
 The pollen then travels inside the flower and fertilizes an
egg.
 The egg will grow into a seed, which can become a
new plant.
 Pollination allows for genetic variation because the traits
from two plants are mixed.
Sexual vs. Asexual