Final answer:
The statement is true. During meiosis, homologous chromosomes separate and are randomly distributed into different gametes, resulting in a 50% chance of gametes having the alleles REL and a 50% chance of gametes having the alleles rel.
Step-by-step explanation:
The statement is true.
During meiosis, which is the process of cell division that produces gametes (sperm and eggs), homologous chromosomes separate and are randomly distributed into different gametes. In this case, the cell contains one pair of chromosomes, with one chromosome containing the alleles R, E, and L, and the other chromosome containing the alleles r, e, and l. At the end of meiosis, the resulting gametes will have different combinations of the alleles. Since the segregation of chromosomes is random, there is a 50% chance that a gamete will contain the alleles REL, and a 50% chance that a gamete will contain the alleles rel.