Answer:
The answer is "
"
Explanation:
In this question, the prescribed mutant E. Coli does not express the lacZ gene, so beta-galactosidase doesn't quite exist. Therefore in a particular strain, there is also the potential of lacZ– and that only the genetic makeup indicates its production of lactose. Therefore the above-mentioned option is correct.
Answer:
the moon's shadow falls on earth
Explanation:
the sun is behind the moon
Rivers usually empty into oceans. Any pollution deposited or pick-up by the river, will eventually end up in the ocean.
The purpose of cutting a frog heart it too relate how the heart structure is. It is just a small scale of the human heart.
Answer:
to cause floods and erode the land
