In rats, black eyes (B) are dominant to red eyes (b). If a rat that is heterozygous for eye color is crossed with a red-eyed rat, what will the phenotype ratio of their offspring be?

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

Use the phylogenetic tree to the right to determine which statement below is true. organisms a and f are not related. organism e is more closely related to organism b than organism f. organisms c and d are more closely related than organisms a and b. phylogenetic trees

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.