Discussion
DNA profiling cannot be carried out from :
Answer: A
DNA profiling cannot be done from erythrocytes.
Mature human red blood cells lose their nucleus as they develop, so they contain no nuclear DNA. DNA profiles from blood come from the white blood cells (leucocytes), which are nucleated.
Buccal smears contain nucleated epithelial cells from the inside of the cheek and are the standard reference sample. Semen contains spermatozoa, rich in nuclear DNA, and hair roots pulled out with the follicle carry nucleated cells. A cut hair shaft without its root has little nuclear DNA, but the option specifies the root tissue.
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