SLIDE 7 8/27/2008 7
Ce lls a nd Chro mo so me s
T he se a re the ne xt two “a dult” wo rds yo u will le a rn to da y.
- Our b o dy is ma de up o f CE
L L S, trillio ns o f the m a nd tha t the y c a n o nly b e se e n with a mic ro sc o pe . tha t the y c a n o nly b e se e n with a mic ro sc o pe .
nside e a c h c e ll a re CHROMOSOME S.
- At c o nc e ptio n we e a c h re c e ive 23 c hro mo so me s fro m
- ur mo m a nd 23 c hro mo so me s fro m o ur da d. So ho w
ma ny c hro mo so me s do we ha ve in e a c h c e ll o f o ur b o dy? T riso my 21 (thre e 21st c hro mo so me s)
- Whe n a b a b y with Do wn Syndro me is c o nc e ive d, the y
g e t a n e xtra 21st c hro mo so me , so the y ha ve 47 c hro mo so me s in e a c h c e ll o f the ir b o dy c hro mo so me s in e a c h c e ll o f the ir b o dy.
he y ha ve no c ho ic e in this ha ppe ning a nd the ir pa re nts ha ve no c ho ic e .
Wha t is Do wn Syndro me ?
- Do wn syndro me is ve ry c o mmo n. I
n fa c t, it is the mo st c o mmo n c hro mo so ma l a b no rma lity in huma ns, whic h
- c c urs o nc e in e ve ry 733 b irths
- c c urs o nc e in e ve ry 733 b irths.
- T
he re a re pe o ple with Do wn syndro me fro m e ve ry ra c e , na tio na lity, re lig io n, a nd b a c kg ro und. I t o c c urs e q ua lly in b o ys a nd g irls.
t do e sn’ t run in fa milie s, a nd no thing the pa re nts did whe n the y we re pre g na nt c a use s Do wn syndro me . Do c to rs a nd e xpe rts a re no t re a lly sure wha t c a use s it. I t just ha ppe ns ra ndo mly, like flipping a c o in o r winning the lo tte ry. P l ith D d t t
- Pe o ple with Do wn syndro me c a n g ro w up to g o to
c o lle g e , g e t ma rrie d, wo rk, a nd live a lo ng ha ppy life --
he y wa nt to ma ke frie nds, do fun thing s, a nd b e inc lude d in the c la ssro o m, lunc h a nd a t re c e ss.