there is a difference of only one amino acid c chain of the hemoglobin of humans and gorillas. What might have caused this difference?

 If the two amino acids are comparable in polarity, then i do no longer think of it would make a difference. The fold of the protein (in accordance with polarity) may well be very comparable. If the replace grew to become right into a nonpolar and polar diffrence, then you definately ought to discover why this alteration is so considerable. it would even have been a mutation interior the DNA whilst that specie grew to become into merely commencing as much as conform. That mutation might have been handed down. good success.