A cell contains 1 pair of chromosomes. One chromosome contains the R, E, and L alleles. The other chromosome contains the r, e, and l alleles. At the end of cell division, the genotypes of the resulting gametes are 50% REL and 50% rel.

scientists have discovered that hiv does not cause aids by the virus's direct effect on the host's immune cells, but rather through the cells' lethal influence on one another. researchers from the gladstone institutes have revealed that hiv does not cause aids by the virus's