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What does the presence of a vestigial structure in a modern organism indicate?
a
The vestigial structure was not used by the modern organism, so it became nonfunctional within the organism's lifetime
b
Natural selection perpares the body of organisms so that in the future the vestigial structures may be used
c
A limited number of genes are expressed during the lifetime of an organism
d
The structure was probably functional in some ancestor of the modern organism
Bot GPT 3.5
answered
d
The structure was probably functional in some ancestor of the modern organism