Answer:
This represents a <u>frameshift</u> mutation.
Explanation:
The difference between the two sequences is that there is an extra base (C) in the second sequence. A frameshift mutation occurs when there is an insertion or deletion of a nitrogenous base into a DNA sequence.
We need more information about the question
Answer:
Covalent bonds
Explanation:
The bonds between the atoms that make up water molecules are called covalent bonds.
These would be the elements in row 2 the alkaline metals. Elements in a row usually share many qualities such as electon reactivity as well as similar characteristics like the fact that many alkaline metals are considered Cations, ions with positive charges. Some examples are beryllium and calcium.
Option D – amphibians may use their skin for gas exchange is the characteristic feature of amphibians that differs from reptiles.
Explanation:
The amphibian skin is moist, thin and marbled and supplied by blood vessels running on its surface. The moisture present in the skin dissolves the oxygen present in its surrounding which is absorbed by the blood vessels. Special glands help the amphibians to keep the skin moist.
The very thick and tough scales present on the reptiles prevent them to absorb oxygen through their skin. Hence, they breathe and respire through their lungs.
Amphibians have three-chambered heart. They do not develop amniotic eggs. Adult amphibians although spend much time on land, they breed only in water due to the absence of amniotic sac
.