Is the variation associated with lactose tolerance (lactase persistence) found on one chromosome or both chromosomes in individuals with the trait? Explain your answer.

Need the diagram below, which is not drawn to scale, shows the position of the earth, moon, and sun. what type of eclipse occurs when the earth, moon, and sun are lined up in the order shown? a. planetary eclipse b. solar eclipse c. martian eclipse d. lunar eclipse

Why are current extinctions of concern to enviromentalists?

All phases of matter may have a fixed mass