Using a Punnett Square, work out the distribution of phenotypic features in the first filial generation after a cross between a homozygous female and a heterozygous male for a single locus.
Difference between gene and allele
Gene are the units of inheritance capable of transmitting genetic information and expressing the a particular trait in an organism.
whereas
Allele (allelomorphs) refers to the alternate form of a gene pair present on the same loci in the homologous chromosome. They are slightly different forms of the same gene.
When a cross is made between tall plant with yellow seeds (TtYy) and tall plant with green seeds (Ttyy), what proportions of phenotype in the offspring could be expected to be
(a) tall and green
(b) dwarf and green ?