Transcript Document

Genetic
Disorders
Albinism
Disorder
in which
people lack pigment in
skin, hair and eyes
They must have
protection from sun
Albinism
Cleft Palate
Opening
in roof of mouth
and lip (they don’t close
properly)
There are problems with
feeding and speech
Cleft Palate
Down Syndrome
Caused
by extra 21st
chromosome
Causes mental
retardation
Similar physical traits
Down Syndrome
Down Syndrome
Turner’s Syndrome
Caused
by absence of X
chromosome
Only in females
Causes girls to look
more masculine
Turner’s Syndrome
Turner’s Syndrome
Hemophilia
Disorder
in which blood
clots more slowly or not at
all
Sex-linked (carried on the X
chromosome)
Affects more males
Hemophilia
Colorblindness
Disorder
where you
cannot tell the difference
between certain colors
Sex-linked
Affects more males
Colorblindness
Colorblindness
Colorblindness
Klinefelter’s Syndrome
Caused
by an extra X
chromosome
Only in males
Causes males to have
feminine characteristics
Klinefelter’s Syndrome
Tay-Sachs
Fat
builds up in the
brain
Infants die by age 5
Common among
Jewish people
Tay-Sachs
PKU
Cannot
break down
amino acid
phenylalanine
Have to eat foods low in
protein
PKU
PKU
All
newborns
are tested
with a heel
prick to
determine if
they have
PKU.
Sickle Cell Anemia
Blood
cells are
abnormally shaped
(sickle shaped)
More common in AfricanAmericans
Sickle Cell Anemia
Cystic Fibrosis
Disorder
causing a buildup
of mucous in the lungs
Also have digestive
problems
Recessive trait
Fatal (will eventually die)
Cystic Fibrosis
Dwarfism
Causes
a lack in
height – person is
shorter than normal
Most common kind is
a Dominant trait
Dwarfism
Huntington’s Chorea
Nerve
cells in brain
deteriorate over time
Dominant trait
Symptoms not seen until
age 35-50
Huntington’s Chorea
Fragile X
Piece
of X chromosome
is missing or mutated
Causes mental
retardation
More common in males
Fragile X