Is the resemblance between timber wolves and tasmanian wolves the result of common ancestry

Yes

Explanation:

Homologous structures or similar structural features can be a result of common ancestry. DNA comparison and analysis between the species can be used to identify the common ancestor.

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.