Let’s call them allele A, allele B and allele C. A diploid organism always
has 2 alleles, which can be equal or different. So you can figure out these posible
combinations: AA, AB, AC, BB, BC, CC (please note that AB = BA, so that counts
as 1 genotype; the same with AC = CA, BC = CB). So there are 6 different posible
genotypes. Besides, this doesn’t mean there are 6 phenotypes – you will have to
gather information about dominance to see which phenotype is produced by each
genotype (there are usually less phenotypes than genotypes).
every cell has work to do but different cells may have different jobs in multicellular organisms, cell with the same type of job often work together. These group of specialized cell from tissue in turn, tissue often group together to form larger units called organs the heart is an organ; so is the stomach.
