Y chromosome

the sex chromosome that is responsible for determining maleness in humans and other mammals. The body cells of normal males possess one Y chromosome and one X chromosome (XY). The Y chromosome is much smaller than the X chromosome and is thought to carry just a handful of functioning genes. Hence, males are far more susceptible to sex-linked diseases than females, because the Y chromosome lacks the alleles to counteract any defective genes carried on the X chromosome.

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Psychology term of the day

December 19th 2024

qualitative evaluation

an evaluation method that yields narratives gathered primarily from unstructured methods of data collection, naturalistic observation, and existing records. As an initial or divergent phase of program evaluation, it seeks to allow maximum opportunity to frame evaluation objectives. This approach is usually associated with a goal-free evaluation rather than a goal-based evaluation. Compare quantitative evaluation.