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Zoology 1

In lecture you instructor asserted that Darwin's theory of natural selection is a scientific theory whereas the theory of intelligent design is not. Which of the following are essential characteristics of a scientific theory? -It is testable through observations and experiments -Its conclusions are the subject to change based on new findings
In the phylogeny of the Genus Swimma by Osborn et la shown in the first lecture, the tips represent "blank" and the nodes represent "blank" -extant species of annelid worms: ancestor species
The report by Osborn et al also described a unique feature of this new genus Swima: bioluminescnet 'bombs' that they release from their bodies....What is the proper term for the bomb trait in these Swima species? Homologous
Which of the following are observations upon which Darwin's theory of natural selection is based? -Natural resources are limited -Heritable variation occurs among individuals in a population
Melanism in pepper moths is considered an example of natural selection bc -as pollution levels increased, dark individuals had higher fitness than light individuals
Melanism in pepper moths is considered an example of evolution bc the relative frequency of dark and light forms in the population changed over time
The form of natural selection in which extreme phenotypes at either end of a distribution have lower fitness than intermediate phenotypes is called stabilizing selection
Ammonites are extinct molluscs commonly found as fossils in marine sediment; they show a continuous series of forms changing from uncoiled to coiled. Such observations fit the pattern predicted by Gradualism
Most colonial protozoa and sponges are both examples of which of the following grades of organization cellular
Vertebrates and Arthropods are both examples of which of the following grades of organization organ-system
Which of the following are potential costs to a larger body size -more difficult to exchange of nutrients, gases and wastes with the environment -harder to maintain structure
Created by: damarish
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