How Does the Phenomenon of Horizontal Gene Transfer Muddle the Concept

question 22

Multiple Choice

How does the phenomenon of horizontal gene transfer muddle the concept of monophyletic groups?

• A)Monophyletic groups are based on the concept that a particular group of species descended from a common ancestor.When horizontal gene transfer occurs in the common ancestor,any species to which it gives rise can no longer be considered descendent species.
• B)Monophyletic groups are based on the concept that a particular group of species descended from a common ancestor.When horizontal gene transfer occurs,not all of the genes in a species were inherited from the common ancestor.
• C)Monophyletic groups are based on the concept that members of a particular group of species are related to one another at a particular taxonomic rank.However,a species that undergoes horizontal gene transfer no longer belongs to that taxon and the group is no longer monophyletiC.
• D)Monophyletic groups are based on the concept that members of a particular group of species are related to one another at a particular taxonomic rank.An unrelated species that undergoes horizontal gene transfer can become more closely related to members of a different group,and the group is no longer monophyletic.

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