MCQ
In Hydra the symmetry is
- AAbsent
- ✓Radial
- CBilateral
- DSpherical
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| Column $- I$ | Column $- II$ |
| $(1)\; HIV$ | $(v)$ Oncogenic virus |
| $(2)$ Cancer | $(w)$ Micosporum Trichophyton |
| $(3)$ Allergens | $(x)$ Retrovirus |
| $(4)$ Ringworm | $(y)$ Colostrum |
| $(z)$ Serotonin |
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.