MCQ
In pachytene, each tetrad contains
- ATwo chromatids
- BOne chromatid
- ✓Four chromatids
- DThree chromatids

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$(I)$ It is located on the dorsal side of forebrain.
$(II)$ It plays very important role in the regulation of $24$ hour rhythum of our body.
$(III)$ It helps in maintaining the body temperature
$(IV)$ It's hormone, influences the metabolism as well as defense capability.
$I. Serotonin$ $II. ACTH$ $III. MSH$ $IV. PRL$ $V. Melatonin$ $VI. FSH$
The correct option is