Title: Human Genetics
1Human Genetics
- Disorders caused by mutations or chromosomal
abnormalities
2(No Transcript)
3A yoga that makes you sweat By Dennis Watkins
The sweating bodies and red, tired faces could
have belonged to a platoon of military trainees,
but these students were actually practicing yoga.
This particular version, called Bikram yoga, is a
90-minute routine of poses and breathing
exercises, all performed in a 105-degree room.
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5Why do we sweat?
- It controls our body temperature.
What if we didnt sweat?
6Anhidrotic Ectodermal Dysplasia
- Group of disorders characterized by the
absence of sweat glands, abnormal teeth, and
hypotrichosis (less hair than normal)
Doesnt usually affect life span
Allele shows incomplete dominance, need two to
have full disorder
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8Cystic Fibrosis
- Normal cells in the lungs create some mucus but
it is regularly cleared away.
9Cystic Fibrosis, cont.
- Constant mucus makes people with CF get lung
infections a lot. It scars their lungs.
10Cystic Fibrosis, cont.
Patients need treatment to clear the mucus and
help them breathe.
11Cystic Fibrosis, cont.
CF is a recessive gene so you need two copies of
the allele to show the condition.
12Cystic Fibrosis, cont.
CF usually leads to early death. Average life
expectancy is 31 years.
13Huntingtons Disease
Progressive deterioration of the nerve cells in
certain parts of the brain
14Huntingtons, cont.
Symptoms Uncontrolled movements Loss of
intellectual faculties Emotional disturbance
15Huntingtons, cont.
- Early symptoms mood swings, depression,
irritability or trouble driving, learning new
things, remembering a fact, or making a decision - Concentration on intellectual tasks becomes
increasingly difficult and the patient may have
difficulty feeding himself or herself and
swallowing.
16Huntingtons, cont.
Treatment No way to stop or slow the
progress Drugs to help control emotional and
movement problems All have side effects
1750 chance of getting it if a parent has it
18Huntingtons, cont.
19Down Syndrome
Karyotype of a person with Down syndrome
There are two of each chromosome except 21
20Down Syndrome
When the cells go through division, one
chromosome gets mixed up. You end up with extras
or not enough.
21Down, cont.
Causes physical differencesflat nose, eyefolds,
poor muscle tone, short neck, heart defects
22Down syndrome, cont.
1 in 800 people May shorten life, mostly because
of health problems (heart) Most have mild to
moderate mental retardationnot all
23Down syndrome, cont.
Known for positive, enthusiastic
attitude. Employers trust, very reliable
Want to be seen for what they can do
http//www.ndss.org/