A good example of this is the ABO blood groups - traditionally we have identified three alleles Iᴬ, Iᴮ, and i, but it turns out that are multiple sequences that correspond to each of those alleles! Furthermore, two alleles that appear to the same at a phenotypic level may have different sequences. sequence differences) that separate them. However, any two alleles are likely to have multiple polymorphisms (i.e. genetic polymorphisms) being present in a population. Resembling small snapdragons, the eye-catching blossoms exude a slight grape soda fragrance. Having multiple alleles is (usually§) a consequence of multiple different sequence variants for a gene (i.e. Angelonia Angelface Blue (Summer Snapdragon) is a tender perennial, usually grown as an annual, boasting a profusion of showy spikes of large, deep violet-blue flowers from late spring to the first frosts. Polymorphism (literally "many forms") means different things in different contexts, but in a genetic context it really just means that there are differences in the sequences.įor example SNPs (pronounced "snips" - stands for single nucleotide polymorphisms) are a very common type of sequence polymorphism. This is the Snap to grow in that 'risky' spot where others may have failed. The flowers continue over a long season, and the plant is equally suited for spring or fall, being quite weather-resistant. Not exactly - what is true is that genetic polymorphisms are responsible for the existence of (most) alleles. Just 12 inches high and up to 8 inches wide, Twinny Appleblossom is nicely compact, and it makes the most of its smaller space.
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