New genes can evolve from all of the following except a. gene duplication from unequal crossing over. b. combining parts of two or more genes. c. exon shuffling. d. gene duplication from crossing over. e. gene duplication from replicating transposable elements.

The answer is (E) Gene duplication from replicating transposable elements.

Explanation:

Gene duplication from crossing over or unequal crossing over can leads to appearance of new DNA sequences. Then, the new sequences create new genes. It can also find in many text books as a chromosome mutation.

From C. exon shuffling, it is also a way to make new genes in which different exons from different genes can be bought together, or the same exon is duplicated. Thus, these causes change the DNA sequences.

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.

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