sex determination

the genetic mechanism that determines the sex of offspring. In humans, a fertilized egg with two X chromosomes becomes a female, and a fertilized egg with one X and one Y chromosome becomes a male. See sex differentiation.

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Psychology term of the day

February 28th 2025

hypnotic regression

a therapeutic technique in which an individual under hypnosis is induced to relive a previous experience that may be contributing to current emotional difficulties. There are two types of hypnotic regression: age regression and past-life regression.