How are hearing and touch alike and how are they
different?

In hearing, a sound's frequency determines its pitch, and is crucial to the perception of speech and music. In touch, the frequency of vibrations is used to perceive texture and to sense the environment through hand-held tools.

Explanation:

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.