Which adaptive radiation is correctly matched to the extinction event that preceded it?
17. The Evolution of Animals
Animals
- Scelta multipla28views
- Scelta multipla
The evolution of the Hox gene cluster likely allowed for what key evolutionary innovation?
28views - Scelta multipla
Which of the following statements are true?
I) Adaptive radiations often follow mass extinction events as organisms adapt to fill previously occupied niches.
II) Adaptive radiations are common on new volcanic islands where organisms can occupy many new environments.
III) The evolution of a new trait can trigger adaptive radiation as organisms are able to outcompete resident organisms in many different environments.
23views - Scelta multipla
In arthropods, the Hox genes Ubx and abd-A are largely expressed in the same tissues. The illustrations below show in red which tissues both Ubx and abd-A are expressed in three species of arthropods. Based on this illustration, which statement is consistent with the data?
Images adapted from: Jennifer K. Grenier, Theodore L. Garber, Robert Warren, Paul M. Whitington, Sean Carroll
Evolution of the entire arthropod Hox gene set predated the origin and radiation of the onychophoran/arthropod clade,
Current Biology, Volume 7, Issue 8, 1997, Pages 547-553,
ISSN 0960-9822,
https://doi.org/10.1016/S0960-9822(06)00253-3.
29views - Scelta multipla
Which of the following statements about the Cambrian Explosion are true?
I) Before the Cambrian Explosion, most organisms had soft bodies.
II) The Permian extinction created new ecological niches that were exploited during the Cambrian Explosion.
III) After the Cambrian Explosion, new morphological features like limbs and jaws are observed.
22views - Scelta multipla
Which of the following would be considered an example of an adaptive radiation?
32views