Admin Table of Contents
- 1 Which species would be considered more primitive based upon the structure of their limbs group of answer choices?
- 2 What pattern of evolution is most likely to have caused these limbs to develop in this manner?
- 3 What is the most likely reason that horses and mountain goats have hooves?
- 4 What caused this type of evolution to occur?
Which species would be considered more primitive based upon the structure of their limbs group of answer choices?
Finals Study Guide
| Question | Answer |
|---|---|
| Which organism are considered most primitive based upon the structure of their limbs? | reptiles |
| For the clade of winged organisms, which of the following would be considered the outgroup? a.) insects b.) bat c.) eagle d.) penguin | D.) Penguin |
What pattern of evolution is most likely to have caused these limbs to develop in this manner?
Divergent evolution is the process in which a trait held by a common ancestor evolves into different variations over time. A common example of divergent evolution is the vertebrate limb. Whale flippers, frog forelimbs, and your own arms most likely evolved from the front flippers of an ancient jawless fish.
Which group of animals is an example of morphological convergence?
Convergence is often associated with similarity of function, as in the evolution of wings in birds, bats, and flies. The shark (a fish) and the dolphin (a mammal) are much alike in external morphology; their similarities are due to convergence, since they have evolved independently…
Which of the following would be most useful for comparing all known groups of organisms?
In order to compare all known groups of organisms, researchers must study slowly evolving DNA sequences shared by all organisms. DNA encoding ribosomal RNA evolves slowly and is shared by all known organisms, so it would be useful to compare all known groups of organisms.
What is the most likely reason that horses and mountain goats have hooves?
What is the most likely reason that horses and mountain goats have hooves? They have homologous structures because they have a common ancestor. Whales have what seem like remnants of a pelvis and femur, as shown here.
What caused this type of evolution to occur?
Evolution occurs when these heritable differences become more common or rare in a population, either non-randomly through natural selection or randomly through genetic drift. This occurs because organisms with advantageous traits pass on more copies of these heritable traits to the next generation.
Which of the following would be considered the most persuasive evidence for evolution?
The fossil record was incomplete in Darwin’s time, but many of the important gaps that existed then have been filled by subsequent paleontological research. Perhaps the most persuasive fossil evidence for evolution is the consistency of the sequence of fossils from early to recent.
Which of the following is an example of morphological convergence?
The evolutionary development of similar structures in two or more species, often widely separated phylogenetically, in response to similarities of environment; for example, the wings in insects, birds, and flying mammals.