TLS Online TPP Program

#Question id: 5275


 The designation his- refers to

#XL - S Microbiology
  1. the genotype of a bacterium that lacks a functional gene for histidine synthesis.

  2. the genotype of a bacterium that has a functional gene for histidine synthesis.

  3. the opposite of a hers gene.

  4. the genotype of a bacterium that lacks a functional gene for histidine synthesis and bacteria that are auxotrophic for histidine.