Answer:
Because of self-pollination results in the same traits every time, so he could be sure his results were from his crosses.
The repressor would no longer be able to bound back to DNA.B.
Answer:
It began after the stock market crash of October 1929, which sent Wall Street into a panic and wiped out millions of investors. Over the next several years, consumer spending and investment dropped, causing steep declines in industrial output and employment as failing companies laid off workers
Answer:
13 protons
Explanation:
Aluminum has an atomic number of 13, therefore it has 13 protons.