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Explanation:
Hybrid sterility cause postzygotic reproductive isolation.
Answer: The main reproductive hormones are estrogen and testosterone. Once a girl enters puberty, estrogen matures the eggs in the ovaries. These are then released at regular intervals during the menstrual cycle. Testosterone stimulates the production of sperm in men.
Explanation:
Gel is used as a tool or technique to separate or diagonse DNA fragments according to their size,helps in visualization
