Which of the following correctly identifies a difference between mitosis and meiosis? A. Mitosis has two division cycles, meiosis has one division cycle,

B. Mitosis has one division cycle, meiosis has two division cycles,

C. Mitosis has two division cycles, meiosis has four division cycles,

D. Mitosis has four division cycles; meiosis has two division cycles,

white blood cells or wbc s are mainly 2 types-

1.agranulocytes

2.granulocytes

the monocytes or macrophages of agranulocytes , dendritic cells which are accessory leucocytes, and b cells which is one type of lymphocytes   identify the antigens present on the pathogen's surface. these three cells are called antigen presenting cells(apc) which are phagocytes and destroy the antigens by secreting antitoxins. besides this leukocyte is always plays vital role in the immunity of the body.

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.