- ASeminal fluid
- BVaginal fluid
- CUterine lining
- DFallopian tube
Explanation:
Seminal fluid, i.e., semen contain spermatozoa and is secreted by males.
Seminal fluid contains many components apart from spermatozoa like proteolytic enzymes and other enzymes, fructose, ascorbic acid, prostaglandins, etc., and some substances promote the survival of spermatozoa.
On the other hand, vaginal fluid, uterine lining and fallopian tube are components of female reproductive system.
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$I.$ It represents typical agarose gel electrophoresis which showing differential migration of $DNA$ fragments
$II.$ Lane $1$ contains undigested $DNA$ fragments
$III.$ Lanes $2$ to $4$ contains digested $DNA$ fragment
$IV.$ Smallest $DNA$ bands are present at ( $A$ ) position and largest $DNA$ bands are present at ( $B$ ) position