The meat of chicken breasts is considered white meat, whereas chicken legs and thighs are made up of dark meat. However, the breast and leg meat of migrating ducks are composed of dark meat. The breasts of chickens and ducks are used in flying. How can you explain the differences in color of the muscle meat? How are they adapted for their particular functions? Be sure to use proper terminology when referring to the various types of skeletal muscle fibers.

it's     c       this is a cell (b) with a nucleus (c) containing dna (a). the dna is organized into chromosomes (d). a section of the chromosome that codes for a trait is called a gene (e).

the correct answer is: b. pantala flavescens, because these organisms would have a high level of genetic variation due to sexual reproduction.  

because involves two organisms (parents) whose genetic material combines, sexual reproduction leads to genetic variation in new generations of offspring. the offspring is an unique organism, with new genome, more protected with the higher ability to adapted. this process is fundamental to evolution.