Q. If a cross between two individuals produces offspringe with 50% dominant character (A) and 50% recessive character (a),then the genotypes of parents are
A) Genic interactions controlling a character
B) Multiple genes controlling a character
C) Expression of many characters by a single gene
D) Alternative forms of a gene at a given locus
Explanation
Allelism refers to presence of alternative forms of a gene at a given locus. Alleles or allelomorphs are the two contrasting aspects of the same character present at a locus of homologous pair of chromosomes. Now –a-days, the same aspect in duplicate (TT or tt) of a character is also considered an allele.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.