Often different genes can interact in a way that influences the same trait. In the Blue-eyed Mary (Omphalodes verna), for example, there exists a gene with alleles that determine the color of flowers: blue or magenta. Another gene, however, controls whether the flowers have color at all or are white.
The regular price of buying miles from American is about 3.17 cents per mile ($29.50 per 1,000 miles plus a 7.5% Federal Excise Tax) â before a $30 Processing Charge per purchase â but with the maximum bonus offer, itâll actually drop your price down to just 2.02 cents per mile!
I needed just 8,000 more miles in my account to book two tickets home, and it looked like I was going to have to buy them. American Airlines wanted to charge $220 plus taxes and fees, which seemed like a huge rip off. But it really does drive home the purpose of buying miles.