It's never that simple. Once you realise plasmids are a thing, bacterial genetics lineages stop being trees and are more like.. three-dimensional cobwebs. It only takes adjacency of bacterial colonies for them to spread genetically. (overly simple e.g. respiratory bacterial infection in cow, cow is full of antibiotic resistant other bacteria, bacteria share plasmids, respiratory infection eventually spreads to humans, cow developed AB resistance is now in humans and can spread to most human bacterial species).
"Concept 34 Genes can be moved between species. Genes can be moved between species. Because of the universality of the genetic code, the polymerases of one organism can accurately transcribe a gene from another organism. For example, different species of bacteria obtain antibiotic resistance genes by exchanging small chromosomes called plasmids. In the early 1970s, researchers in California used this type of gene exchange to move a "recombinant" DNA molecule between two different species."
It's never that simple. Once you realise plasmids are a thing, bacterial genetics lineages stop being trees and are more like.. three-dimensional cobwebs. It only takes adjacency of bacterial colonies for them to spread genetically. (overly simple e.g. respiratory bacterial infection in cow, cow is full of antibiotic resistant other bacteria, bacteria share plasmids, respiratory infection eventually spreads to humans, cow developed AB resistance is now in humans and can spread to most human bacterial species).
"Concept 34 Genes can be moved between species. Genes can be moved between species. Because of the universality of the genetic code, the polymerases of one organism can accurately transcribe a gene from another organism. For example, different species of bacteria obtain antibiotic resistance genes by exchanging small chromosomes called plasmids. In the early 1970s, researchers in California used this type of gene exchange to move a "recombinant" DNA molecule between two different species."
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