The sudden change in a gene structure or chromosome number in an organism likely to cause an inheritable change in the phenotype is known as? by Sunday | May 14 | Biology WAEC | 0 comments A. migration B. mutation C. mitosis D. meiosis Correct Answer: Option B B. mutation Users Also Read These:Which of the following statements is correct about…The most likely mode of an organism that possesses…When a gene is expressed in the phenotype in a…A man heterozygous for albino gene marries a woman…The structure that joins the two strands of a…