BSC 1101 (Chapter 25)
cause iron in ocean water and terrestrial rocks to rust (oxidize) Submit
An early consequence of the release of oxygen gas by plant and bacterial photosynthesis was to _____.
permitted the evolution of novel forms
The duplication of homeotic (Hox) genes has been significant in the evolution of animals because it _____.
in particular environments, similar adaptations can be beneficial to more than one species
The existence of evolutionary trends, such as increasing body sizes among horse species, is evidence that _____.
self-replicating RNA molecules
The first genetic material on Earth was probably ________.
the evolution of cellular respiration, which used oxygen to help harvest energy from organic molecules Submit
The oxygen revolution changed Earth's environment dramatically. Which of the following took advantage of the presence of free oxygen in the oceans and atmosphere?
a variety of empty ecological niches, leading to adaptive radiation
Upon being formed, oceanic islands, such as the Hawaiian Islands, should feature what characteristic, leading to which phenomenon?
4, 1, 3, 2, 5
What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on Earth? 1. origin of mitochondria 2. origin of multicellular eukaryotes 3. origin of chloroplasts 4. origin of cyanobacteria 5. origin of fungal-plant symbioses
It includes transitional forms with progressively specialized teeth.
What is true of the fossil record of mammalian origins?
Cambrian, Devonian, Permian, Cretaceous
Which listing of geological periods is in the correct order, from oldest to most recent?
Evolution is limited by historical constraints.
Which of the following is a limit of evolution that results in exaptations?
