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BIOA02H3 Study Guide - Rhagoletis, Dont, Eusociality

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champagnefox463
16 Apr 2011
School
UTSC
Department
Biological Sciences
Course
BIOA02H3
Professor
Kamini Persaud

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BIOA02H3 Full Course Notes
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BIOA02H3 Full Course Notes
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Document Summary

22 the mechanisms of evolution: charles darwin partook in a 5 year long voyage in the 19th century on the. Genotype: the genetic feature of the individuals phenotype coding for that trait o. Trait: a specific form of a appearance character: a population evolves when individuals with different genotypes survive or reproduce at different rates. And increases the frequency of homozygous individuals from h-w equil. Bottom-dwelling skates and rays evolved a body plan that further flattened their ancestors body plan bellies, allowing them to swim on the ocean floor: ex. Males of polygynous species are significantly larger than the females and often bear large weapons (horns, antlers, large canine teeth) sexual dimorphism. Developing and maintaining these structures is energetically costly, and males are often injured during their contests; their life span is often considerably shorter than that of female.

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Related Questions

What is NOT a requirement for evolution by natural selection to occur?
a) Traits must be inherited
b) Traits must influence reproductive success
c) Inherited traits must have variation within the population
d) Characteristics that are favored (fitness) relate to the immediate environment
e) Variations will appear that will allow the survival of the species in future, unforeseen, circumstances.

Charles Darwin...
a) ... arrived at the idea of natural selection in the Galápagos Islands.
b) ... was the first scientist to suggest evolution.
c) ... claimed that only aggressive and strong individuals would survive and reproduce.
d) ... with Alfred Wallace, published a mechanism for adaptive change, natural selection, and proposed a "tree of life".
e) ... argued that chimpanzees and gorillas were progressively evolving into human beings.

17. Which of the following did NOT influence Darwin's ideas as he formulated his theory of evolution by natural selection? a. His five-year voyage on the Beagle. b. Malthus's writings about the growth of populations in limited resources. c. Lyell's principles of uniformitarianism. d. Mendel's theory of inheritance.

During his 5-week voyage to the Galapagos Islands, Darwin noticed that several closely related species of finches had slightly different beak structures, each of which favoured the use of different food sources. Could Lamarck have used this observation to support his own theory of evolution by use and disuse? What evidence would need to be observed in order to decide which theory was more accurate?