In humans, normal color vision (N) is dominant over color blindness (n). A man and woman with normal color vision produced two colorblind sons and two daughters with normal vision. Choose from the diagram the correct parental genotypes. 1. XNY and XNXN 2. XNy and XNXn 3. xny and XNXN 4. Xhy and xnxn Submit Answer Hide Toolbar

Which of the following statements is a scientific claim? a. the early solar system had large amounts of water; so, the oldest objects in the solar system should also be abundant in water. b. earth is shaped like a sphere even if not all of the scientific observations related to its shape support this idea. c. the mass of the universe is much greater than current models predict; it is not possible to explain this inconsistency. d. planet earth is abundant in water, but there is no way to scientifically determine from where earth's water originated.