A duplicated gene evolved into a switch that determines sex in frogs, revealing how evolution can safely reshape critical ...
Objective To compare the diagnostic accuracy of minipad collected menstrual blood versus clinician collected cervical samples to test for human papillomavirus (HPV) in the detection of cervical ...
Most animals carry out sexual reproduction. Sexual reproduction involves the joining of two sex cells (gametes) – the sperm (male gamete) and the egg/ovum (female gamete).
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