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• cystic fybrosis ( known as CF)

- common disease affects entire body .

-causing progressive disability and often early death .

-simptom :

1.difficulty breathing .

2.lung infection .

3. diarrhea and etc .

-caused by a mutation in the gene 4 d protein CF trasmembrane conduction regulator .

(gene required to regulate sweat , digestive juices and mucus )

-CF consider an autosomal recessive disease .

• PKU ( phenylketunuria)

- in ability of the body to utilize the essential amino acid , phenylalanine .

-inherited in a (recessive fashion) > (an affected person inherited two traits for dis order)

-simptom :

1. vomitting
2. severe brain problems
3. small head (microcephaly)
4. prominant cheek .
5. decreased body growth .

• albinism .

-have little or no pigment in their eyyes , skin or hair .

-sometimes do not recognise albinism .

-common myth have red eyes.

-is an inherited condition present at birth , characterised by a lack of pigment that normally gives color to the skin ,hair and eyes .

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