Animal Reproduction
Reproduction in Animals

Asexual Reproduction:
– A single living organism that can
produce one or more identical
individuals

Sexual Reproduction:
– The combination of male and female
gametes, each of which contain half of
the genetic material necessary to the
future offspring.
Gamete: The male or female
reproductive cell that can unite with
another, similar cell from the
opposite sex, through a process
called fertilization
 Sperm: The male reproductive cell,
which includes a “tail” for movement
(the whole structure is called a
spermatozoa)

http://www.youtube.com/watch?v=6rauO_M9tb4

Ovum: The female reproductive cell,
the plural is “ova”. Commonly called
an egg.
http://www.youtube.com/watch?v=2-VKgdhfNpY&feature=related
Steps of Vertebrate Reproduction
1. Male gamete fuses with a female
gamete
 2. Fusion produces a cell called a
zygote that contains complete
genetic material
 3. The zygote divides and transforms
into an embryo with many cells

4. The embryo develops into a small
animal
 5. When the animal becomes an adult
it will produce gametes and
reproduce

Conditions for Sexual Reproduction
1. Male and female gametes must be
at the same place at the same time
 2. The zygote must obtain the
nutrients and protection it needs to
survive including warmth and
moisture


Oviparous: Lays eggs- reptiles,
birds, amphibians, insects and fish

Viviparous: Fertilized ovum develops
completly inside the mother’s bodyalmost all mammals

Ovoviparous: Produce eggs but do
not lay them, instead keep them
inside their body- snakes