MCQ
In frog the urinary bladder is
- AAbsent
- BPaired
- ✓Bilobed
- DNone of these
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Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.
$A.$ Barrier methods of contraception
$B.$ Cover the cervix during coitus
$C.$ Protect the user from contracting $STDs$
$D.$ They are reusable