A is wrong.
B is right because that is their job.
C is wrong because that is the B-cells' role.
D is wrong.
Answer:
EtBr inserts between the stacked bases in the DNA double helix.
Explanation:
- EtBr is used for visualizing DNA bands as it fluoresces under the UV illumination.
- EtBr is an aromatic compound that is capable of inserting itself between the stacked bases of the DNA double helix.
- The hydrophobic environment around the base pairs where the EtBr intercalates is responsible for the fluorescence. As the EtBr molecule intercalates between these base pairs the cation of EtBr sheds the water molecules associated with it and this causes it to fluoresce under UV light as water is a quencher of fluorescence.
Answer:
<em>The four nucleotides that make up DNA are </em><em>adenine (A), cytosine (C), guanine (G), and thymine (T).</em>
<em>What happens if one of these nucleotides are swapped for another?</em>
<em>The simplest mutation is a point mutation.</em> <em>This occurs when one nucleotide base is substituted for another in a DNA sequence. The change can cause the wrong amino acid to be produced.</em>
<em>I hope this helps and have a great day!</em>
Explanation:
Answer:
d
Explanation:
d.gravitropism as it's both going downwards