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