As the sarcomere contracts which band becomes smaller? which band remains the same?

Which best describes the scientific process

Atypical human cell is approximately 12.00 μm in diameter and enclosed by a membrane that is 5.000 nm thick. (a) what is the volume of the cell including the membrane? (b) what is the volume of the cell membrane? (c) what percent of the total volume does its membrane occupy? to simplify the calculations, model the cell as a sphere. enter your answers using four significant figures.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.