I think your question all turn into lowercases, uppercases, and lowercases are important in genetics because it can differentiate between the dominant and recessive forms. let me explain at least how to calculate the offspring percentage: for example, you have Rr crossed with another Rr (R for wrinkled peas and r for smooth peas), you just have to match between the four letters, and you will have four possibilities: R and R R and r r and R r and r you will have RR, Rr, Rr, and rr if we convert into percentages, it will give: 25% RR 50% Rr (there's two Rr so 25 + 25) 25% rr
In the members of solanaceae family examples potato,tomato, egg plant or brijal, flowers have five (5) stamens and petals are also (five) in numbers. Stamens in the flowers of the above mentioned plants are attached with the petals of the flowers. This condition is known as epipetalous.