When the embryo has functional testes, Leydig cells of the fetal testis secrete testosterone, and the Sertoli cells secrete MIS (MRF)

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#Id: 9084

#Unit 4. Cell Communication and Cell Signaling

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#Id: 4646

#Unit 13. Methods in Biology

Diphenyltetrazolium bromide, a yellow tetrazole is reduced by metabolically active cells to form insoluble, purple formazan dye crystals detected at 570nm

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#Id: 4566

#Unit 8. Inheritance Biology

DOMINANT EPISTASIS

In dominant epistasis, however, only a single copy of an allele is required to inhibit the expression of an allele at a different locus.

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#Id: 4985

#Unit 6. System Physiology – Plant

The ratio of red light (R) to far-red light (FR) varies remarkably in different environments. This ratio can be defined as follows:

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#Id: 4689

#Unit 11. Evolution and Behavior

When the fitness interests of two individuals are different, they are in conflict.

The evolution of cooperation and conflict depends on when these kinds of behaviors are favored by natural selection.