Which of the following is an example of jury-rigged design, or an adaptation that is constrained by the particular ancestral structure of the organism?
A) antibiotic resistance in bacteria
B) anatomy that allows upright posture in humans
C) the wings of bats
D) ethanol tolerance in fruit flies

Question

Quizplus · Accepted Answer

Upright posture in humans is an example of jury-rigged design because it is constrained by the particular ancestral structure of the organism. Human ancestors had a horizontal spine and quadrupedal locomotion. The transition to bipedalism required adaptations to the spine, pelvis, and lower limbs, resulting in a less than optimal design.

Which of the Following Is an Example of Jury-Rigged Design