Answer:
G: cumulonimbus cloud
Explanation:
This cloud is the cause of most hurricanes and tonadoes
Small clouds accumulated in dense areas are known as snow
The answer is B, multicellular.
—Evidence—
•] Organs are differentiated structure formed by group of cells and tissues to perform the similar functions.
Answer:
b) spontaneous reverse mutation
Explanation:
Spontaneous mutations are produced by natural biological processes, while induced mutations are produced by mutagenic agents that trigger nucleotide errors in the DNA sequence. In the first phase of the experiment, Sally generated an induced mutation by using 5-bromouracil. The resulting strain required a constant supply of tryptophan to grow.
A reverse mutation restores the wild-type phenotype modified by a forward mutation, thereby reversing the phenotypic alteration to its original state. In a second step of the experiment, the colonies grew without the supply of tryptophan, thereby evidencing that the mutation was reversed in the original colony.
