Question 2 Which of the following characteristics of meiosis explains why this process contributes to genetic diversity within a population?
O
Meiosis results in novel combinations of alleles in offspring.
O
Meiosis is a necessary step in the production of gametes.
O
Meiosis reduces the number of chromosomes by half.
Meiosis occurs only in sexually reproducing organisms.

What does all of the organ system in a human form

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Which description provides the best objective summary of the article in the passage?