A research geneticist discovered that a particular trait is controlled by ______ she identified as B, b1, b2, b3, b4, b5. 

A. genes
B. alleles
C. phenotypes
D. genotypes


B. alleles

Biology & Microbiology

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Indicate the differences between protostomes and deuterostomes, and list the phyla of animals in each group.

What will be an ideal response?

Biology & Microbiology

Which is true about superantigens?

A. They are a type of exotoxin. B. They bind to MHC class II antigen on T cells. C. They enhance specific antibody production. D. They are processed intracellularly. E. They are a type of exotoxin AND they bind to MHC class II antigen on T cells.

Biology & Microbiology

Potential energy is the energy of which of the following?

a. position b. motion c. chemical bonds d. light

Biology & Microbiology

how many virus particles per cell does "serum hep" provide?

What will be an ideal response?

Biology & Microbiology