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Y-chromosomes exist in the body cells of many kinds of male animals.
Y ChromosomeX chromosomeSex ChromosomesChromosomesSex ChromatinMechanism of Notch Signaling: The image depicts a type of cell signaling, in which two animal cells interact and transmit a molecular signal from o
Notch genesNotch ProteinsCellular control mechanismsdelta proteinSignal PathwaysThe crystal jellyfish, Aequorea victoria, produces and emits light, called bioluminescence.
Green fluorescent proteinFluorescent polymersProteinsBiofluorescenceLuminescenceThis illustration shows George Beadle and Edward Tatum's experiments with Neurospora crassa that indicated that single genes produce singl
Neurospora crassaMicrobiologyX-raysGeneticsEnzymes