m.amjad bhatti

1. M.AMJAD YAQOOB
2011-AZ-017

2.  White tiger is
recessive mutant
of Bangal
tiger(Orange
tiger).

3.  White Tiger is caused by the homozygous
occurrence of a recessive allele in
genome.
Occurrence
Reported in Assam,Bangal,Bihar,and
espacially in former states of Rewa.
Birth Rate
Out of 15000 births of orange tiger, there
is one birth of white tiger.

4.  Chinchillagene
the mutation is
recessive to
normal colour.

5.  Hetrozygous + Hetrozygous
 Gives both Orange and White Tigers
 White + white
 Gives only WHITE TIGERS.

6. White + Orange
(Homozygous (Homozygous
Recessive) Dominant)
RESULT;
white gene is disappeared.
WHY……….?

7. WHITE + ORANGE
(homozygous) (hrtrozygous)
RESULT;
50% 50%

8. ORANGE + ORANGE
(HETROZYGOUS) (HETROZYGOUS)
RESULT;
25% WHITE TIGERS(homozygous)
50% PURPLE TIGERS(hetrozygous)
25% ORANGE TIGERS(homozygous)

9.  Defines strips
distance on body.
 Orange tiger, who
inherits two copies
of this gene
becomes GOLDEN
TABBY.
 White tiger
becomes stripless.

10.  White Tiger has an enzyme in their fur which
react to temperature.
 White tiger produced a mutated form of
tyrosinase, an enzyme cause production of
Melanin, which only function at very low
temperature i.e below 37C* or 99F*.
 That’s why White Tigers are darker at theirs
legs,mouth and ear etc.
 This phenomena is called Acromelanism.

11.  Instress or confusion, White tiger cross their
eyes(Squint or partly closed).
 This disease is known as STRABISMUS.
 Due to abnormality in optic chiasm.
 Neurons from RATINA to BRAIN to OPTIC
CHIASM, some cross and don’t cross, so the
image is projected to wrong HEMISPHERE of
BRAIN.

12.  Club foot(short tendons of forelegs)
 Kidney problems
 Crooked backbone
 Twisted neck
 React strangely to anesthesia(The best drug
for immobilizing a tiger is CI 744.)
MOTALITY RATE;
80%.