As brown is dominant, all four children will have brown eyes.
For more population and it is also bad if the world is overpopulated.
It attaches to chromosomes to split them into two identical sets. This allows the cell to reproduce exact copies of itself (assuming we don’t have nondisjunction!)
If the dominant allele is t and the recessive allele ("non-taster") is n, than tn and tt are the genotypes of a "taster". tn is heterozygous and tt is dominant homozygous. nn is the genotype of a "non-taster" and it is recessive homozygous.
