I know it depends on phase. So i am talking of -
1) in human (diploid organism) with cells before prophase (before replication, when 23 pair of homologous chromosomes are present ). I think answer is 2 if we not consider male XY sex chromosome because they are not homologous in which case the answer should be 1. But then i get confuse why genotype is shown like Tt (doesnt this means two alleles per chromosome).
2) in gamete cell. I think the answer should be 1.
Please tell if i'm correct.