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Inherited disorders Flashcards

(9 cards)

1
Q

What is Cycstic fibrosis ?

A

It is a genetic disorder of the cell membranes. It results in the body producing a lot of tho m sticky mucus in the air passages and in the pancreas

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2
Q

What is cystic fibrosis caused by ?

A

A recessive allele

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3
Q

What is polydactyly caused by ?

A

A dominant allele

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4
Q

What is polydactyls ?

A

A genetic disorder where a baby’s born with extra. fingers or toes. It usually cause any other roble a so isn’t life threatening

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5
Q

What does it mean if something is a recessive allele ?

A

Carried by about 1 person in 25. Because it’s recessive, people with only one cohort of the allele won’t have the disorder (carriers)

For a child to have the disorder, both parents must be either carriers or have the disorder themselves

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6
Q

What does it mean if something is a dominant allele ?

A

Can be inherited if jus one parent carries the defect

There is a 50% chance of a child having the disorder if one parent has one D allele

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7
Q

How. an embryos be screened for genetic disorders ?

A
  • Before being implanted it is possible to remove a cell from each embryo and analyse the genes (genetic disorders can be detected)

-It is also possible to get DNA from an embryo in the womb and test for disorders

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8
Q

What are the arguments against embryonic screening ?

A
  • Implies that people with
    genetic problems are undesirable - increase prejudice
  • May become a point when wants to screen their embryos and pick the desirable one
  • Screening is expensive
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9
Q

What are the arguments for embryonic screening ?

A
  • Held to stop
    people suffering
  • Treating disorders costs the Government a lot of money
  • There are laws to stop it going too far. At the moment parents cannot even select the sec of their baby
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