We know that the gene is part of DNA molecule in organism. I would like to know - are the both strands of DNA equally loaded/”filled” with genes? Or maybe only one strand contains genes? If both strands contain genes then can one gene on one strand “overlap” the other gene on the other strand? On the picture below we see that the Gene 3 on the lower strand partly overlaps the Gene 2 on the upper strand, does this happen?