Match the items on the left with the best corresponding statement on the right. 1 . chromosomes contains tightly packaged DNA mo
lecules 2 . Carl Correns the person who experimented with four o'clocks 3 . incomplete dominance a change in a gene that results from a reproductive mistake 4 . DNA cell division in which the new cells have the same number chromosomes of as the parent cell 5 . mitosis the person who discovered the principles of genetics 6 . Gregor Mendel the special molecule that is able to store and recover information about traits 7 . R.C. Punnett the person who devised a system of squares used to record genetic problems 8 . mutation a condition in which neither gene of a pair is dominant; instead, they show a blended effect 9 . meiosis cell division in which the new cells have one-half of the original number of chromosomes
Sickle-cell disease is common in tropical and sub-tropical regions because being a carrier, carrying a single sickle-cell mutation (sickle cell trait), affords some resistance to malaria.
