The correct option is C Both chromosomes and genes segregate at the time of gamete formation and each gamete has one member of each pair
Sutton and Boveri compared the behaviour of chromosomes with genes and found certain similarities. The pair of homologous chromosomes and pair of alleles (alternative forms of gene) segregate at the time of gamete formation and each gamete receives one of each pair.
Independent pairs of chromosomes segregate independently of each other during meiosis.
When two different alleles are present together (heterozygous condition), then one allele dominates the other. This was a finding of Mendel, not Sutton and Boveri.