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.
Ependyma cells. These cells
that make up the neuroectodermal padding is responsible for the production of cerebral
spinal fluid. The cells are one type of neuroglia
cells of the central nervous system. The lining of ependyma cells of the brain also
plays a role in neuroregeneration.
Here is the difference between a climate and a weather that will help explain the given statements. When we say climate, this is the weather condition that exist in an area or a particular region over a LONG PERIOD OF TIME. On the other hand, weather is <span>the state of the atmosphere at a place and time as regards heat, dryness, sunshine, wind, rain, etc. This changes often.
So here are the answers.
1. Weather
2. Climate
3. Weather
4. Weather
5. Weather
6. Weather
7. Weather
8. Weather
9. Climate
10. Climate
11. Weather
12. Weather
13. Climate
14. Weather
15.Weather</span>
Answer:
There are two ways plants can achieve this. First, they can minimize the resistance to diffusion of CO2 through the stomata (i.e., have lots of large, open stomata). Second, they can maximize the biochemical rate of fixation (i.e., have high concentrations of photosynthetic enzymes).
A is direct variation because the line does not curve and x and y are in a direct ratio
