A) Baldness
B) Red-green colour blindness
C) Facial hair/moustaches in males
D) Night blindness
Correct Answer: B
Solution :
Red-green colour blindness or colour blindness is a genetic disorder in which eyes fail to distinguish red and gren colours. It is a recessive sex linked trait. The normal gene and its recessive allele are carried by X-chromosomes. In human males the defect appears in the presence of single recessive gene \[({{X}^{c}}Y)\] while in females it appears when both the sex chromosomal carry the recessive gene \[({{X}^{c}}{{X}^{c}})\]. Such person cannot serve in railway department. Other options of the question are hormonal or vitamin deficiency disorders.You need to login to perform this action.
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