Examlex
The suprachiasmatic nucleus is the body's internal "clock" that governs the timing of circadian rhythms, including the sleep-wake cycle and the mental alertness cycle.
Diploid Cells
Cells that contain two complete sets of chromosomes, one from each parent, typical of the somatic cells in animals.
Haploid Cells
Cells that contain a single set of chromosomes, half the number of chromosomes of a diploid cell, characteristic of gametes.
Centromeres
The region of a chromosome where the two sister chromatids are most tightly connected, playing a vital role in chromosome segregation during cell division.
Mitosis
A type of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth.
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