Answer:
True
Explanation:
B cells are B lymphocytes and are one of the types of white blood cells. Their main role is in the acquired immune system in which they help in the humoral immune response of the body by the secretion of antibodies. The maturation of the B cells occurs in the bone marrow in mammals. But in birds, these cells mature in an organ named bursa of Fabricius which is a lymphoid organ in birds. These B cells were first isolated form the bursa of Fabricius of the birds.
<span>Dr. Nelson studies the psychological factors that seem to be associated with the development of heart disease. Dr. Nelson specializes in health psychology.</span>
Answer:
state or RARELY <em>form</em>
Explanation:
Haploid. This means that the cells produced during the second meiotic division contains only one set of chromosomes. During mitotic division, the cells produced are diploid. This means that they contain two sets of chromosome. There is a pair of each chromosome. However, a haploid cell contains only one chromosome out of the pair. The production of haploid cells by the second meiotic division produces gametes or sex cells. It is essential that gametes have only one set of chromosomes since gametes combine during sexual reproduction. It then allows for the correct two sets of chromosomes to be found in the offspring.
