MCQ
Which of the following is correct about viroids$?$
- AThey have free $DNA$ without protein coat.
- BThey have $RNA$ with protein coat.
- ✓They have free $RNA$ without protein coat.
- DThey have $DNA$ with protein coat.
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All of the above written physiological processes are regulated by
$R -$ Factors for coagulation of blood are always present in an active form.