Which type of muscle has muscle cells that connect to one another at junctions called intercalated disks?

Cardiac muscles have intercalated disc that connects one cardiac muscle fibre to other.

Explanation:

Intercalated discs are a characteristic feature of cardiac muscles. These structures connect one cardiac fiber to others. Intercalated discs have desmosomes and gap junctions.

The function of desmosomes of the intercalated disc is to hold the cardiac muscle fibers together while gap junctions serve to facilitate the rapid conduction of electrical signals.

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.

the tricuspid valve is present between right atrium and right ventricle