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A Study of Susceptibility to Major Depressive Disorder in Monozygotic

question 41

Essay

A study of susceptibility to major depressive disorder in monozygotic twins separated at birth revealed that the broad-sense heritability of this trait is 0.10, and its total phenotypic variance is 0.25. What is the variance of the genotypic value of this disorder? Show your work.


Definitions:

Cell-Mediated

Direct cellular response to antigens.

Immature Cells

Cells that are in the early stages of development and have not yet reached their final form or function within the body.

Phagocytosis

A cellular process in which cells engulf and digest particles or other cells, typically as a defense mechanism.

Monocytes

A type of white blood cell that plays a significant role in the immune system by fighting off pathogens and removing dead or damaged cells.

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