The correct answer to this question is 3. Chromosomes are DNA molecules, which house an organism's genetic materials. These materials including packaging and chaperone proteins. The definitive discovery of chromosomes came in the mid 1880s from scientist Theodor Boveri. Chromosomes can be viewed under a light microscope, but they can only be viewed when the cell is going trhough the metaphase of cell divison.
The recombination of chromosomes during meiosis and sexual reproduction have a vital role in the diversity of genetics. Humans have a total of 46 chromosomes, for each cell containts 23 pairs. Autosomes are twenty-two of the pairs, while the twenty-third pair is called a sex chromosome.
The sliding filament hypothesis describes the process of muscle contraction based on muscle proteins that slide past each other to generate movement. It was introduced in 1954 by two research teams.
According to the sliding filament premise, the myosin filaments of muscle fibers slide past the actin filaments throughout muscle contraction, while the two groups of filament remain at a relatively constant length. The sliding filament theory is the term for the process that describes how thin filament to generate muscle contraction.
A series of steps take place so that the muscle can generate the tension required to contrast. The length of concentration depends upon how much ATP and calcium are present. The concentration of muscle is what makes movement possible. This theory describes the way a muscle cell contracts or shortens.
A. Genetic theory. This is because, genetics are unique
Particles in solid only vibrate. In liquids and gases they move