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.
The inner plants are rocky and terestial. so D
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The answer is d. telophase meiosis II. I hope this is helpful and brainliest would be nice ;)
Answer:
Explanation:
English-The geocentric model says that the earth is at the center of the cosmos or universe, and the planets, the sun and the moon, and the stars circles around it. The early heliocentric models consider the sun as the center, and the planets revolve around the sun.
Spanish-El modelo geocéntrico dice que la tierra está en el centro del cosmos o universo, y los planetas, el sol y la luna, y las estrellas giran a su alrededor. Los primeros modelos heliocéntricos consideran al sol como el centro y los planetas giran alrededor del sol.
