REPRODUCTION IN VERTEBRATES
Reproduction is a characteristic of all living organisms
Successful reproduction is essential to ensure the continued existence of a species
Animals use various reproductive strategies to increase their reproductive success in
different environments.
Reproductive strategies:
Processes and mechanisms involved in increasing the chances of successful
reproduction.
Sexual
Asexual
- Fusion of gametes
- No fusion of gametes
- 2 parents produce gametes which
- 1 parent, copying its DNA and
fuse at fertilization forming a
dividing to form offspring
zygote
Courtship behavior
- A combination/set of behaviours used to
attract a mate and show sexual readiness.
There are different ranges of behaviours:
Auditory cues: song, call, roar, howl.
Olfactory cues: smells, pheromones
Visual clues: colour, peacock tails, big
mane, dance, fight, antlers.
Building: nest, shelter
External fertilization Internal fertilization
Reproduction is a characteristic of all living organisms
Successful reproduction is essential to ensure the continued existence of a species
Animals use various reproductive strategies to increase their reproductive success in
different environments.
Reproductive strategies:
Processes and mechanisms involved in increasing the chances of successful
reproduction.
Sexual
Asexual
- Fusion of gametes
- No fusion of gametes
- 2 parents produce gametes which
- 1 parent, copying its DNA and
fuse at fertilization forming a
dividing to form offspring
zygote
Courtship behavior
- A combination/set of behaviours used to
attract a mate and show sexual readiness.
There are different ranges of behaviours:
Auditory cues: song, call, roar, howl.
Olfactory cues: smells, pheromones
Visual clues: colour, peacock tails, big
mane, dance, fight, antlers.
Building: nest, shelter
External fertilization Internal fertilization
