The Ability to Form Endospores in Bacteria Within Bacillales, Clostridiales

question 41

Multiple Choice

The ability to form endospores in bacteria within Bacillales, Clostridiales, and Lactobacillales suggests the genotype/phenotype evolved

• A) at least three separate times in these divergent orders.
• B) at least once, and horizontal gene transfer among relatives explains its presence in other orders.
• C) only once in an ancestor to these three orders, due to the high number of genes required.
• D) either at least once and horizontal gene transfer among relatives occurred or once in a common ancestor.

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