Genotypic and phenotypic ratios remains the same in
Sex-linked genes
Pseudoallelic genes
Intermediate inheritance
Dominance and recessive genes
In poultry, new comb colour appears by colaboration of two dominant gene is
A plant with red flowers was crossed with another plant with yellow flowers. If $F_1$ showed all flowers orange in colour, explain the inheritance.
In Mirabilis, a hybrid for red $(RR)$ and white $(rr)$ flower produces pink $(Rr)$ flower. A plant with pink flower is crossed with white flower, the expected phenotypic ratio is
$A$ : In snapdragon, $F_{1}$ plants do not have red or white flowers.
$R$ : It is intermediate inheritance with neither of the two alleles of a gene being dominant over each other
In a cross of red and white flowered snapdragon plant $F_1$ plants will have flowers.