STD 12 - 4. principal of inheritance and variation — BIOLOGY STD 12 Science — Question
Bihar BoardEnglish MediumSTD 12 ScienceBIOLOGYSTD 12 - 4. principal of inheritance and variation1 Mark
MCQ
Which of these is not a Mendelian disorder?
A
Cystic fibrosis
B
Sickle-cell anaemia
C
Colourblindness
✓
Turner's syndrome
✓
Answer
Correct option: D.
Turner's syndrome
d The disorder cystic fibrosis, sickle cell anaemia, colour blindness and haemophilia are caused due to the abnormality in gene (Mendelian factor). Turner's syndrome is due to chromosomal abnormality. It is characterized by $44$ autosomes and only one $X-$chromosome.
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