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Exceptions: Hybrid animals Exceptions: Hybrid animals Although breeding barriers (5) normally prevent different species from interbreeding with each other in the wild – PowerPoint PPT presentation

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Title: Exceptions:


1
Exceptions Hybrid animals
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Exceptions Hybrid animals
Although breeding barriers (5) normally prevent
different species from interbreeding with each
other in the wild Sometimes species interbreed
when they are in captivity, or when they have
pushed out of their home ranges. Human are almost
always involved somehow when species interbreed.
Interbred species are not kosher
3
Breeding Barriers
Chromosomes need to pair off evenly
different habitat
4
(No Transcript)
5
If these ferocious felines met in the wild, a
raucous brawl, not romance would break out. But
with little choice in captivity (like being in
the same wide cage in an open zoo) the odd
coupling may occur.
lion
liger
tiger
6
Hybrids are usually infertile. Besides
infertility, blindness, faulty hearts and brief
life spans are routine disorders among
hybrids. The wholphin offspring dies at ? age 5.
The average life span of its parents is 40-50
years.
orca whale
dolphin
wholphin
7
Wolves and coyotes can be driven to interbreeding
by loss of habitat (clearing forests).
timber wolf
coyote
coywolf
8
Zorses are deliberately interbred by humans. They
inherit the strength and speed of the wild zebra,
and the intelligence of the domesticated horse.
horse
zorse
zebra
9
Mules are also deliberately interbred by humans
for greater strength and endurance.
horse
mule
donkey
10
Beefalo are also deliberately interbred by humans
for food.
cow
beefalo
buffalo
11
camel
lama
cama
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