To determine the possible genetic make-up of gametes produced by this diploid cell with two pairs of homologous chromosomes (represented as Ss and Tt), we can use the principle of independent assortment.
In this case:
- The "S" and "s" represent alleles for one gene.
- The "T" and "t" represent alleles for a second gene.
When gametes are formed, each gamete will receive one allele from each pair of chromosomes, and the alleles segregate independently. We can list the combinations of alleles that can form gametes:
- ST (dominant S and dominant T)
- St (dominant S and recessive t)
- sT (recessive s and dominant T)
- st (recessive s and recessive t)
Therefore, the correct answer is ST, St, sT, st.