A black mouse is bred to a white mouse, producing 2 black and 1 white offspring. What is the genotype of the black mouse?

Which is a genetic engineering advancement directly related to a career in biotechnology? 1) improving solar energy collection 2) transporting textiles at higher rates 3)creating crop foods that resist insect pests 4)repairing historical sites with quality materials

What's the waste product of electrons and pyruvate combining in fermentation?  

What is a general feature of a species that varies from one individual to the next (skin tone,eye color or hair color)? a.organism b.trait c.character