Single phenotype : Single locus → multiple normal alleles

NEET PG Biochemistry
#1

True about polymorphism is

  1. Single locus → multiple normal alleles

  2. Single locus → multiple abnormal alleles

  3. Single phenotype : Single locus → multiple normal alleles

  4. Single phenotype : Single locus → multiple abnormal alleles

exp:

Polymorphism :

Clinically harmless variation of DNA sequences that doesnot affect the phenotype.
They constitute : single base pair substitution, deletions & insertions in noncoding region.
They dont alter protein coding sequence because of degeneracy of genetic code.
So, polymorphism is single phenotype, single locus & multiple normal allele.