Lecture 1 Notes (Biology Overview)
Lecture 1 Notes (Biology Overview) Fw 104
Popular in Wildlife Ecology and Conservation (GT-SC2)
Popular in Animal Science and Zoology
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This 2 page Class Notes was uploaded by Courtney Potter on Friday September 4, 2015. The Class Notes belongs to Fw 104 at Colorado State University taught by Nicole K M Vieira; Ann L Randall ; Tyler Ryde Swarr in Summer 2015. Since its upload, it has received 53 views. For similar materials see Wildlife Ecology and Conservation (GT-SC2) in Animal Science and Zoology at Colorado State University.
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Date Created: 09/04/15
Vocabulary Biology Wildlife Wildlife Management Biodiversity Natural Resources Conservation Sustainable Preservation Natural History Life History Anthropomorphic Biology Background DNA 0 Genetic code or blueprint that uses four types of molecules called bases ATCG o A series of 3 base pairs forms a codon which is like a quotwordquot in a sentence coding for a gene Genes use codons to say how to produce proteins or quotsentencesquot DNA found in chromosomes of cell 0 Different organisms have a different number of chromosomes Locusposition of a gene sequence on a chromosome Alleles different versions of same gene code for different version of a trait Heterozygous traits different alleles from parents Homozygous traits same alleles from parents Genotype individual genetic blueprint Phenotype trait exerted on the outside 0 Genotype different but still same phenotype due to dominant and recessive traits 0 Same genotype and different phenotype can be shown because Same genotype environment phenotype Genotypic variation differences in genetic makeup Phenotypic variationdifferences in morphological physiological and behavorial makeup in animals Mutation 0 Change in sequence of base pairs 0 Radiation chemicals replication errors etc 0 Important for evolution Evolutionchange in genetic composition of population in a period leads to new species 0 Natural selection environment limits which genes get passed on 1 Genetic variation advantageous genes passed on 2 Overproduction of offspring produce more offspring than can survive 3 Struggle for existence compete for food space and mates 4 Differential survival and reproduction 0 Sex creates new allele combinations o Recombination during meiosis from chromosomal segments from diploid to haploid o Randomly creates genotypes may be less adapted to environment 0 Asexual reproduction keeps successful genotypes intact No variation however can lead to disease killing off species 0 Costly in energy and time 0 Adult has to develop by fertilized egg 0 Red Queen Hypothesis 0 In order to keep up as a species species must constantly evolve Cost And Curiosity of Animal Ornamentation Ornaments advertise its tness and genes to potential mate Courtship males compete females get to choose 0 Sexual selection is a form of natural selection Loss Of Genetic Variation Genetic drift random change in allele frequencies in small populations lnbreeding lose recessive traits Small populations endangered species huge risk Speciation new species produced by environment changing 0 Example chimps and bonobos look alike eat the same food and live in the same environment yet chimps are aggressive due to lack of food on ground while bonobos are peaceful because food is plentiful Evolution 5 Important Survivaladaptation diversity
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