state gov APPSC (ఆంధ్రప్రదేశ్) Group 2 (Pre + Mains) Mock Test 2023 Current Affairs Science and Technology
Which of the following statement regarding cell-free DNA is correct?
1
Cell-free DNA is upgraded DNA fragments released to body fluids.
2
They are nucleic acid fragments that enter the bloodstream during apoptosis or necrosis.
3
The majority of cfDNA research is focused on DNA originating from Covid-19
4
Cell-free DNA refers to all encapsulated DNA in the bloodstream.