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A. nucleus
the nucleolus in the inner part of the nucleus, and chromosomes and genes are found within the nucleolus
Answer: 0.69 m/ mile.
Explanation:
The altitude gradient between two cities X and Y = 
Given: Two cities are separated by 200 miles.
City X has an altitude of 122 meters.
City Y has an altitude of 260 meters.
The altitude gradient between two cities X and Y =

Hence, the altitude gradient between the two cites = 0.69 m/ mile.
Answer:
Chromosome 11 likely contains 1,300 to 1,400 genes that provide instructions for making proteins