Chap3 Variations genetiques et santee Flashcards

1
Q

Def de genotype

A

L’ensemble des alleles d’un individu

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2
Q

Def de phenotype

A

Genotype + l’environnement

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3
Q

L’atherosclerose

A

une plaque d’atherome constituee d’un depot graisseux dans la paroi de l’artere

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4
Q

Risque familial relatif d’une maladie

A

Risque avec frere ou soeure atteinte / risque dans la pop generale

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5
Q

Prob. que un couple de porteurs sains aient un enfant malade

A

1/4

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6
Q

Prob d’avoir un enfant malade

A

prob que le pere soit porteur sain * prob que la mere est porteuse saine * prob d’un couple de porteurs sains d’avoir un enfant malade

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7
Q

Def de maladie monogenique

A

une maladie genetique causee par la mutation d’un seule gene

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8
Q

Calculer le risque familial relatif d’une maladie

A

Risque quand siblings atteint/risque dans la pop. generale

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9
Q

Les mutations a l’origine des maladies peuvent etre:

A
  • hereditees des parents
  • ce produire au cours de la vie de l’individu
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10
Q

Def. de allele morbide

A

une allele responsable d’une maladie genetique

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11
Q

Maladie recessive:

A

2 alleles mutees pour etre malade

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12
Q

Maladie dominante:

A

1 seule allele mutee pour etre malade

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13
Q

Homozygote/ heterozygote

A

2 alleles mutees/ 1 allele mutee

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