Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos dev
elop to begin to be unraveled by scientists. (A) Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists.
(B) By the study of the fruit fly, a household nuisance and also a time-honored experimental subject, it was possible for the secrets of how embryos develop to begin to be unraveled by scientists.
(C) By studying a household nuisance but a time-honored experimental subject, the fruit fly enabled scientists to begin to unravel the secrets of how embryos develop.
(D) By studying the fruit fly, a household nuisance and also a time-honored experimental subject, the secrets of how embryos develop are beginning to be unraveled by scientists.
(E) The study of the fruit fly, a household nuisance but a time-honored experimental subject, has enabled scientists to begin to unravel the secrets of how embryos develop.
The statement "Studying the fruit fly, a household nuisance but a time-honored experimental subject, has enabled the secrets of how embryos develop to begin to be unraveled by scientists" can be correctly written as
<u><em>"The study of the fruit fly, a household nuisance but a time-honored experimental subject, has enabled scientist to begin to unravel the secrets of how embryos develop.
"</em></u>
Plant cells<span> have a </span>cell<span> wall, chloroplasts and other specialized plastids, and a large central vacuole, which are </span>not found<span> within </span>animal cells<span>.</span>
