Examlex
What are the role and relationship of egg-polarity genes, segmentation genes, pair-rule genes, gap genes, and homeotic genes in Drosophila development?
Depression
A common and serious mood disorder that causes persistent feelings of sadness and loss of interest.
Winter
The coldest season of the year in polar and temperate climates, characterized by short days, long nights, and typically featuring snow, ice, and freezing temperatures.
Biological Clock
An internal mechanism in organisms that controls the cycle of biological processes and behaviors in a roughly 24-hour cycle, known as the circadian rhythm.
Hypothalamus
A region of the brain that controls an immense number of bodily functions, including temperature regulation and thirst.
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