Mutation, r. c. punnett, dna, mitosis, meiosis, carl correns, chromosomes, incomplete dominance, gregor mendel, 1. contains tightly packaged dna molecules 2. the person who experimented with four o'clocks 3. a change in a gene that results from a reproductive mistake 4. cell division in which the new cells have the same number chromosomes of as the parent cell 5. the person who discovered the principles of genetics 6. the special molecule that is able to store and recover information about traits 7. the person who devised a system of squares used to record genetic problems 8. a condition in which neither gene of a pair is dominant; instead, they show a blended effect 9. cell division in which the new cells have one-half of the original number of chromosomes