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<span>The centromeres split. The two chromatids separate, and each chromatid becomes a new chromosome. The new chromosomes move to opposite ends of the cell. The cell stretches out as the opposite ends are pushed apart.
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Let me help you with this: the hypothalamus synthesizes some hormones that are released into blood vessels bound for another gland, synthesizes oxytocin and ADH and integrates nervous system and endocrine system. The posterior pituitary gland is an extension of the hypothalamus and releases oxytocin. And the anterior pituitary is regulated by hormones released into portal blood vessels, <span> synthesizes and releases TSH and </span><span> synthesizes and releases PRL. </span>
<span>The ability to choose a mate does improve offspring fitness in fruit flies. The choice made by the female fruit fly is based on a recognition pattern of the male's ability to highlight its potency and "genes".
As a conclusion, the better the male's genes, the better the offspring's fitness.</span>