How did watson and crick make useful inference from franklin's x-ray studies of DNA.

Rosalind Franklin made an X-ray image of the DNA molecule, that has revealed the following:

1. The nitrogenous bases are near the center of the DNA molecule

2. DNA molecule is composed out of two strands

3. DNA molecule has the shape of a helix

Watson and Crick made the first model of the DNA molecule based on that very picture. They concluded that the strands are antiparallel and that they are composed of nucleotides.

Explanation:

not sure but try c two haploid cells

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.