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:The change in the genetic makeup of an organism…Uranium of atom number 92 and mass number 238 emits…The structure that joins the two strands of a…The gene that is only located on X-chromosome is said to be?What name is given to a sudden change in a gene or…