genetics - multivit

[ArchivalUser]

pregnant mother of 6 yr old son with G6PD def is worried about female fetus will have disease father & mother clinically normal which of the following true about baby
Baby has
25% chances of clinical disease
50% cahnces of being carriaer
50% chances of clinical disease
baby will be carrier

[ArchivalUser]

baby will be carrier.

[ArchivalUser]

why cant the answer b 50% chance of being a carriaer

[ArchivalUser]

50% carrier

[ArchivalUser]

I X linked recessive disease,

1 affected male & homozygous female
All daughters will b e carriers & all sons will be homozygous normal
2 Normal male & carrier female
on avarage half of the sons will be affected & half of the daughters will be carriers

I nthis case,her son is affected,so her female fetus will have 50% chances of being carrier

[ArchivalUser]

50% chance to be a carrier cz mother is a carrier with only 1 morbid x chrom. 50% to be normal kid.

[ArchivalUser]

correct