1.all muscle cells working together to produce working muscle tissue is an example of which theme of biologya. unity and diversityb. evolutionc. levels of organizationd. structure and function you

c levels of organization. this is because cells make tissue and tissue make organs make organ systems which make organsim, this is levels of organization, hope this helps

levels of organization

Explanation:

The levels of organization can be defined as cells→tissue→organ→organ system→ body. The  cells of the body gets collected and perform a function. This combination of cells is known as tissues.

The tissues collectively is known as organ that perform a particular function. The tissues work together in an organ. Example: stomach, skin et cetera.

The organs combine together to form an organ system. The various types of organs in the body helps in the formation of the whole body and shows the levels of organization.

you know they are heterozygous for a trait because they have it as jj or jj.