Answer:
2, 3 and 4 only.
Explanation:
Mutations refer to change in genetic content or alterations of DNA which might be as a result when the DNA is copied or due to environmental factors like Ultraviolet radiation.
Majority of mutations have neither positive or negative effects on organisms the occur and they are called neutral mutations.
An example is silent points mutations which does not alter the amino acids it's encode.
Some Mutations have positive effects and some have negative effects which cause genetic disorder.
Hearing gives an animal advantages such as being able to listen out for predators, so the animal can run away. The hearing can aid the animal when hunting for other animals, because it can stay still and wait for the right timing to attack, etc.
Answer:
Explanation:
The two strands are held together by hydrogen bonds between the bases, with adenine forming a base pair with thymine, and cytosine forming a base pair with guanine.
Answer- H
| ..
C = O
| ..
H
Explanation: Correct on Edg 2020/2021.
