Sural neuritis or sural neuralgia is the pain or injury to the sural nerve.
Answer:
There will be 12 chromosomes
Explanation:
We have given that The epithelial cells in the skin of an animal have 24 chromosomes
We have to find the number of chromosomes present in the gametes of this animal
We know that number of chromosomes present in the gametes is given by

So number of chromosomes in gametes 
photosynthesis as a whole takes place in the organelle called chloroplast but light reaction takes place in the chloroplast stroma