Examlex
During metaphase I of meiosis,homologous chromosomes can orient themselves such that one or the other will by chance go to a particular daughter cell in a process known as ________________________________.
Light-Sensitive Proteins
Proteins in photoreceptor cells that respond to light and are crucial for vision.
Retinas
The light-sensitive layer of tissue at the back of the eye that converts light rays into neural signals that are sent to the brain for visual recognition.
Melatonin
A hormone that regulates the sleep-wake cycle, produced by the pineal gland in response to darkness.
Pineal Gland
A small endocrine gland in the vertebrate brain that produces and regulates some hormones, including melatonin, which affects sleep patterns.
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