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X-linked recessive genetic defects
There are several X-linked (or sex-linked) recessive genetic disorders, (hemophilia, muscular dystrophy) which are inherited through a genetic defect on an X chromosome. A female has 2 X chromosomes, one she inherited from her mother and one she got from her father. A male has an X chromosome from his mother and a Y chromosome from his father. If a woman has the defect on one of her X chromosomes, and the father's X chromosome is normal, there is a 25% chance for each pregnancy to produce:
- An unaffected girl
- A girl who carries the defect
- An unaffected boy
- A boy with the disorder
X-linked recessive genetic defects
Review Date: 3/31/2024
Reviewed By: Todd Gersten, MD, Hematology/Oncology, Florida Cancer Specialists & Research Institute, Wellington, FL. Review provided by VeriMed Healthcare Network. Also reviewed by David C. Dugdale, MD, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.
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- Shock
- Shoulder joint
- Side sectional view of fema...
- Signs of drug use
- Signs of scarlet fever
- Signs of scoliosis
- Single palmar crease
- Sinuses
- Sinusitis
- Skeletal spine
- Skeleton
- Skin
- Skin bruise
- Skin cancer, melanoma on th...
- Skin characteristics
- Skin layers
- Skin testing - PPD (R arm) ...
- Skin turgor
- Skull fracture
- Skull fracture
- Skull of a newborn
- Sleep patterns in the young...
- Slit-lamp exam
- Small bowel obstruction - x-ray
- Small intestine
- Smashed fingers
- Snake bite
- Sound wave transmission
- Sources of fiber
- Spina bifida
- Spina bifida (degrees of se...
- Spinal anatomy
- Spinal cord injury
- Spinal curves
- Spinal fusion
- Spinal stenosis
- Spirometry
- Spitting up
- Splenomegaly
- Sponge bath
- STDs and ecological niches
- Stein-Leventhal syndrome
- Stinger removal
- Stitches
- Stomach
- Stomach and small intestine
- Stomach disease or trauma
- Stopping bleeding with a to...
- Stopping bleeding with dire...
- Stopping bleeding with pres...
- Stork bite
- Strep throat
- Stroke
- Structure of the colon
- Sturge-Weber syndrome - legs
- Stye
- Substance use during pregnancy
- Subungual wart
- Sun protection
- Sunburn
- Sunken fontanelles (superio...
- Superficial anterior muscles
- Supernumerary nipple
- Supernumerary nipples
- Support group counselors
- Swan Ganz catheterization
- Sweat test
- Sweat test
- Swimmer's ear
- Swollen glands
- Swollen gums
- Swollen lymph nodes in the groin
- Syndactyly
- Systemic lupus erythematosu...
- Teach children to brush
- Teenage depression
- Teething symptoms
- Temperature measurement
- Tension-type headache
- Teratoma - MRI scan
- Tetralogy of Fallot
- Thalassemia major
- Thalassemia minor
- The face
- The skeleton (lateral view)
- Thermometer temperature
- Third degree burn
- Throat anatomy
- Thrombus
- Thumbsucking
- Thyroid gland
- Thyroid ultrasound
- Tick - deer engorged on the skin
- Tick imbedded in the skin
- Tick, deer - adult female
- Ticks
- Time out
- Tinea (ringworm)
- Tinea corporis - ear
- Tinea versicolor - back
- Tinea versicolor - close-up
- Tinea versicolor - close-up
- Tinea versicolor - shoulders
- Tinea versicolor on the back
- Toddler development
- Toddler test
- Tonsillectomy
- Tooth abscess
- Tooth anatomy
- Tooth anatomy
- Torticollis (wry neck)
- Totally anomalous pulmonary...
- Totally anomalous pulmonary...
- Totally anomalous pulmonary...
- Transposition of the great ...
- Treatment for leg strain
- Tricuspid Regurgitation
- Tricuspid Regurgitation
- Tuberculosis of the lungs
- Tuberculosis, advanced - ch...
- TV watching
- Tympanic membrane
- Type I diabetes
- Ulcer emergencies
- Ulcerative colitis
- Ultrasound in pregnancy
- Umbilical catheter
- Umbilical cord healing
- Umbilical hernia
- Untreated hypertension
- Upper gastrointestinal system
- Ureterocele
- Urticaria pigmentosa - close-up
- Urticaria pigmentosa in the...
- Urticaria pigmentosa on the...
- Uterus
- Vascular headaches
- Vascular ring
- Venous blood clot
- Ventricles of the brain
- Ventricular septal defect
- Ventricular tachycardia
- Vertebra, cervical (neck)
- Vertebra, lumbar (low back)
- Vertebra, thoracic (mid back)
- Vertebrae
- Vertebral column
- Vertical banded gastroplasty
- Vertigo
- Vesicoureteral reflux
- Visual acuity test
- Visual field test
- Vitamin A source
- Vitamin B12 source
- Vitamin B6 source
- Vitamin C benefit
- Vitamin C source
- Vitamin D source
- Vitiligo - drug induced
- Vitiligo on the back and arm
- Vitiligo on the face
- Voice box
- Voiding cystourethrogram
- Volvulus - x-ray
- Walleyes
- Wart
- Wart (close-up)
- Wart (verruca) with a cutan...
- Warts - flat on the cheek a...
- Wasp
- Weight loss
- White nail syndrome
- Wilms tumor
- X-linked recessive genetic ...
- X-linked recessive genetic ...
- X-linked recessive genetic ...
- X-ray
- Yeast and mold
- Yersinia enterocolitica organism
- Yoga
- Yo-yo dieting
Presentations
- Achalasia - series
- Adenoid removal - series
- Animal bite - first aid - series
- Ankle sprain - Series
- Appendectomy - series
- Bone fracture repair - series
- Bone-marrow transplant - series
- Bruise healing - series
- Cataract surgery - series
- Chest tube insertion - series
- Choking first aid - adult o...
- Choking first aid - infant ...
- Circumcision - series
- Cleft lip repair - series
- Clubfoot repair - series
- Colon cancer - series
- Complete blood count - series
- Convulsions - first aid - series
- CPR - child 1 to 8 years ol...
- CPR - infant - series
- Craniotomy - series
- Diaphragmatic hernia repair...
- Ear tube insertion - series
- Eardrum repair - series
- Emergency airway puncture ...
- Exchange transfusion - series
- Gastroesophageal reflux - series
- Gastroschisis repair - series
- Heart valve surgery - series
- Hemangioma excision - series
- Hiatal hernia repair - series
- Hydrocele repair - series
- Hypospadias repair - series
- Imperforate anus repair - ...
- Infantile pyloric stenosis ...
- Inflammatory bowel disease ...
- Inguinal hernia repair - series
- Intestinal obstruction (ped...
- Intestinal obstruction repa...
- Large bowel resection - series
- Leg lengthening - series
- Mastoidectomy - series
- Meckel's diverticulectomy ...
- Meningocele repair - series
- Metered dose inhaler use - ...
- Minor burn - first aid - series
- Minor cut - first aid
- Monitoring blood glucose - ...
- Nebulizer use - series
- Omphalocele repair - series
- Pancreatitis - series
- Patent ductus arteriosis (P...
- Patent urachus repair - series
- Pectus excavatum repair - ...
- Pneumothorax - series
- Repair of webbed fingers -...
- Retinal detachment repair ...
- Small bowel resection - series
- Spleen removal - series
- Thyroidectomy - series
- Tonsillectomy - series
- Tracheoesophageal fistula r...
- Two person roll - series
- Umbilical hernia repair - ...
- Ventriculoperitoneal shunt ...
- White blood cell count - series