Amouse had a gene sequence of gtt coding for leucine, an amino mutation in this gene led to the formation of gtg. however, the amino acid formed was leucine, despite the mutation. this is mutation for the mouse.

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.

genetic variation will increase because of a new habitat and food source.

explanation:

links? do you have a link? i don't see anything?