In X-linked recessive inheritance only males are affected. An exception to this seen in examinations are patients with Turner's syndrome, who are affected due to only having one X chromosome.
X-linked recessive disorders are transmitted by heterozygote females (carriers) and male-to-male transmission is not seen. Affected males can only have unaffected sons and carrier daughters. Each male child of a heterozygous female carrier has a 50% chance of being affected whilst each female child of a heterozygous female carrier has a 50% chance of being a carrier.
The possibility of an affected father having children with a heterozygous female carrier is generally speaking extremely rare. However, in certain Afro-Caribbean communities G6PD deficiency is relatively common and homozygous females with clinical manifestations of the enzyme defect are seen.
Examples:
X-LINKED RECESSIVE DISEASES
Mnemonics as GRAHAM BELL
G - G6PD deficiency
R - Retinitis pigmentosa
A - Androgen insensitivity
H - Hemophilia A & B
A - Adrenoleucodystrophy
M - Menkes disease
B - Beckers & Duchennes musculardystrophy, Blindness(color blindness)
E - Emery-Dreifuss dystrophy
L - Lesch nyhan syndrome
L - Lowe disease