A) birds and flowers have different arrangement of the bases. That's what I would've put.
A force of attraction is the type of force that acts between unlike magnetic poles.
Answer:B.) Substitution
Explanation: Mutations are permanent changes in the nucleotide sequence of a DNA molecule. Substitution leads to a point mutation if only one nucleotide is replaced by another.
A substitution mutation occurs when one or more nucleotides in a DNA sequence is replaced by another nucleotide.
Example of substitution is in sickle cell hemoglobin in which valine replaces glutamate at position six in the two beta chains of hemoglobin. In a normal hemoglobin, the two beta chains of hemoglobin have glutamate at the sixth position but in a sickle cell hemoglobin, valine is found at position six on the two beta chains. This is also an example of a point mutation.
First, the sun must evaporate water. This attaches to a condensation nuclei and condenses in the cloud. Condensation occurs when warm air masses cool quickly. The two necessary conditions are for the air to be moist and warm (primarily found in low pressure zones) and for there to be dust/ other condensation nuclei in the air
