Red green colour blindness appears due to
Red green colour blindness appears due to
- A
Excessive drinking of alcohol
- B
Inheritance through $X$ chromosome
- C
Over activity of adrenal
- D
Vitamin $A$ deficiency
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Sickle -cell anaemia has not been eliminated from the African population because it
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Following characters are indicate
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$(ii)$ Blood not clot, non stop bleeding
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Following characters are indicate
$(i)$ presence of sickle - shaped $RBC$
$(ii)$ Blood not clot, non stop bleeding
$(iii)$ The heterozygous female transmit the disease to sons.
$(iv)$ Both heterozygous parents transmit the disease to offspring