Answer No 4:
The possible gametes for a homozygous grey furred and homozygous black eyed rabbit will be GGBB.
Answer No 3:
The possible gametes for a heterozygous grey furred and heterozygous black eyed rabbit will be GgBb.
Answer No 4:
The possible gametes for a heterozygous grey furred and red eyed rabbit will be Ggbb.
Answer No 5:
The possible gametes for a white furred and heterozygous black eyed rabbit will be ggBb.
Usually when you are trying to figure out different possibilities of offspring using punnet squares, 4 genotypes can be figured out. I think that it also depends on how you are finding out the different genotypes for offspring.
Answer:
The discipline that would be responsible for collecting data about currents and tides is the Physical Oceanographers :)