This is the original question - Ques - A researcher exposed Drosophila larvae to 37°C during their growth. One of the adult flies that emerged had a crossveinless phenotype. When this crossveinless fly was crossed to a known crossveinless mutant fly all the progeny had normal phenotype. The options had both condition mutant and phenocopy. What is the difference between condition mutant and phenocopy? Any specific points I can use differentiate between them in such a question?