1. Although we teach natural selection using a single allele, we
recognize that natural selection works upon the entire phenotype of
an organism, not an individual loci.
About 85% of the human population has a muscle in the forearm
called the palmaris longus.
a) What is this feature, and what benefit does it provide?
b) Respond to this common criticism of evolution, providing
evidence to back your statement: “If natural selection
is truly working, we should be perfectly adapted to...