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A-B-C-D-E-F-G-H-I-J-K-L-M-N-O-P-Q-R-S-T-U-V-W-X-Y-Z

Y

Y chromosome

Yeast

A unicellular fungus. One species, the budding yeast Saccharomyces cerevisiae, is used in brewing and baking because of the ease with which it ferments carbohydrates to ethyl alcohol and carbon dioxide.

Yeast two-hybrid system

Yellowthroat, subspecies of

Yersinia pestis

Yolk sac