BIO 272 Final Exam Questions and Answers | Verified | Graded A

BIO 272 Final Exam Questions and
Answers

2 Types of Genes CORRECT ANSWERS 1. Structural genes that code for biological
structures
2. Regulatory genes that code for the proteins that signal tje structural genes to start
performing

Hypermorphosis CORRECT ANSWERS a prolongation of time for development of a
feature leading to its relative magnification

Examples of paedomorphosis CORRECT ANSWERS -Mickey Mouse
-Newts
-Human evolution
-Cats (less prognathism, big eyes, less room in mouth for teeth)
-sharks (retaining cartilage)
-Lungfish - missing bone, juvenile face

Examples of hypermorphosis CORRECT ANSWERS Irish elk, growth of rack is
allowed to continue onward

EvoDevo CORRECT ANSWERS How does development change in order to create
evolutionary change?

Heterochrony CORRECT ANSWERS Evolutionary change in the timing or rate of an
organism's development.

Paedomorphosis CORRECT ANSWERS The retention in an adult organism of the
juvenile features of its evolutionary ancestors.

Progenesis CORRECT ANSWERS Reaching adulthood at what would have been the
time of the juvenile stage in the ancestor

Neoteny CORRECT ANSWERS The presence of immature characteristics into
adulthood; development is slowed, but major developmental events occur at same age

Peramorphosis CORRECT ANSWERS The exaggeration of adult features in young
organisms

Acceleration CORRECT ANSWERS When an organism reaches adulthood at a
juvenile age