Tal­mu­dic Ques­tion #185

Where on Earth would one ex­pect to find a sin­gle species of mi­crobes (a pure cul­ture) for sus­tained pe­ri­ods of time?

Within a group of well-stud­ied DNA-based mi­crobes (phages, bac­te­ria, and eu­kary­otes), genome sizes are found to vary by al­most four or­ders of mag­ni­tude. Their rates of mu­ta­tion per base pair also vary...

Which group of bac­te­ria and ar­chaea is more abun­dant on Earth (by mass): ob­lig­ate aer­obes, ob­lig­ate anaer­obes, fac­ul­ta­tives, or ob­lig­ate anaer­o­bic respir­ers?