Why do we require a separate set of theories for the origin as compared to the maintenance of sexual reproduction?

a. The benefits or costs of sexual reproduction were not realized until a fully functional system of sexual reproduction was in place.
b. Extant asexual organisms had sexual ancestors.
c. Origin and maintenance require different explanations by philosophical ne-cessity different explanations.
d. Sex may have evolved multiple times.
e. A and B.


E

Biology & Microbiology

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