What is a scientific theory

scientific Theory. A single explanation that connects a large set of related observations or results from experiments. Scientific Theory. A process that includes the different ways that scientists find out about the natural world and try to explain what they have observed.

Explanation:

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.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.