In dit overzicht vind je een korte samenvatting en informatie hoe je de oefeningen over overerving moet oplossen voor het deeltje genetica. Als je dit documentje vanbuiten kent, dan kan je vlot de oefeningen maken.
Monogene overerving (mutatie op 1 gen)
Autosomaal recessief o Normale dominante allel -> hoofdletter N (=
- Mucoviscidose normale variant)
- Fenylketonurie (PKU) o Recessief afwijkend allel-> kleine letter z (=
- Albinisme ziekmakend )
o Homozygoot -> NN of zz°
(dominant/normaal of
recessief/aangetast)
o Heterozygoot -> Nz of zN
(symptoomloos drager)
o Symbool ° -> aangetast individu
Autosomaal dominant o Afwijkende dominante allel -> hoofdletter Z (=
- Ziekte van Huntington ziekmakend )
- Neurofibromatose o Recessief normale allel-> kleine letter n (=
- Achondroplasie normale variant )
o Homozygoot -> ZZ° of nn
(dominant = aangetast of
recessief = normaal)
o Heterozygoot -> Zn° of nZ° (= aangetast)
o Symbool ° -> aangetast individu
X - gebonden recessief o Dominante normale allel -> hoofdletter X
- Ziekte ven Duchenne o Recessief afwijkende allel -> kleine x*
- Fragiele – X syndroom Vrouw : XX : homozygoot dominant
- Hemofilie Xx*/x*X : heterozygoot
- Rood – groen kleurenblindheid x*x*° : homozygoot recessief (=aangetast)
Man : XY : hemizygoot dominant
x*Y° : hemizygoot recessief (=aangetast)
X – gebonden dominant o Dominante afwijkende allel -> X*
- Rett – syndroom o Recessief normale allel -> X (uitz.!!)
Vrouw : XX : homozygoot recessief
X*X°/XX*°: heterozygoot (= aangetast)
X*X*° : homozygoot dominant (= aangetast.)
Man : XY : hemizygoot recessief
X*Y° : hemizygoot dominant (= aangetast.)
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