People with sickle cell trait carry only one copy of the altered hemoglobin gene and rarely have any clinical symptoms related to the disease. In contrast, people with sickle cell disease carry two copies of the altered hemoglobin gene.
The overall process of meiosis produces four daughter cells from one single parent cell. ... Unlike in mitosis, the daughter cells produced during meiosis are genetically diverse
The independent variable has to do with the amount of water put onto the rock; the dependent variable is the mass of the rock after it has been in the water.