Which statement correctly describes horizontal gene transfer?
a. Conjugation, transformation and transduction are all forms of horizontal gene transfer.
b. Conjugation and transformation are forms of horizontal gene transfer, but transduction is a form of vertical
gene transfer.
c. Eukaryote-eukaryote transfers of nuclear genes are most common.
d. Prokaryote-eukaryote transfers of nuclear genes are most common.
e. Partial diploids always result from horizontal gene transfer.
ANSWER: a
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