You are sequencing frog DNA and you discover extra genes in some cells that are not present in other cells of the same frog. Give several possibilities. Antisense therapy involves injecting a single-stranded segment of a gene with the same nucleotide sequence as the complement of the sense strand of a crucial structural gene. The injected gene fragment binds to the microbial DNA and has been used to effectively stop infection by some microbes. Describe how this might work.
Operons are regulators of structural gene function.
Describe a hypothetical inducible operon that would turn on a human structural gene for chocolatase, but only when chocolate interacts with saliva in your mouth. Explain why your most recent urinary tract infection did not get better after you took the same antibiotic that cured it the last time. Both infections cultured the same species of bacteria. Oncogenes are regulatory genes that are associated with cancer. Conjugation is only possible with closely related species of bacteria.