Adaptation. An adaptation is a feature that is common in a population because it provides some improved function. Adaptations are well fitted to their function and are produced by natural selection. vestigial structure is a feature that was an adaptation for the organism's ancestor, but that evolved to be non-functional because the organism's environment changed. Fish species that live in completely dark caves have vestigial, non-functional eyes.
Dr. Kristin Eagan, M.D. The average cost for a round of BotoxÂ® is about $500, but the specifics will obviously vary a lot from patient to patient. Some patients pay as little as $200 and some pay upwards of $900.This gap in the price range depends on lots of factors such as:otoxÂ® prices nationwide average between $10 and $15 per unit. If it takes 25 units of BotoxÂ® to weaken or paralyze the frown and laugh muscles, you could expect to pay $250 to $375 for it. If it takes 75 units of BotoxÂ® to weaken forehead muscles, you could expect to pay $750 to $1,125 for it.
How Much Does Botox Cost? As with most things in life there is a wide range in the price you can expect to pay for Botox injections. Starting prices for Botox can be as little as Â£100 but some clinics will charge up to Â£350 for the same procedure. Clinics generally charge on a 'per area' basis but some clinics may charge on a 'per unit' basis. This is something you will need to check with the clinic when discussing the likely cost of your treatment.