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BIOL 142 Lecture Notes - Lecture 22: Emic And Etic, Ecori, Agarose Gel Electrophoresis

42 views7 pages
bluemosquito338
30 Apr 2018
School
Emory University
Department
Biology
Course
BIOL 142
Professor
Patrick Cafferty

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Answer choice F2offspring (#, phenotype, genotype)
A400 brown, winged flies (BbNn)
400 black, winged flies (bbNn)
400 brown, wingless flies (Bbnn)
400 black, wingless flies (bbnn)
B0 brown, winged flies (BbNn)
800 black, winged flies (bbNn)
800 brown, wingless flies (Bbnn)
0 black, wingless flies (bbnn)
C200 brown, winged flies (BbNn)
600 black, winged flies (bbNn)
600 brown, wingless flies (Bbnn)
200 black, wingless flies (bbnn)
D600 brown, winged flies (BbNn)
200 black, winged flies (bbNn)
200 brown, wingless flies (Bbnn)
600 black, wingless flies (bbnn)
E800 brown, winged flies (BbNn)
0 black, winged flies (bbNn)
0 brown, wingless flies (Bbnn)
800 black, wingless flies (bbnn)
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Answer choice F2offspring (#, phenotype, genotype)
A400 brown, winged flies (BbNn)
400 black, winged flies (bbNn)
400 brown, wingless flies (Bbnn)
400 black, wingless flies (bbnn)
B0 brown, winged flies (BbNn)
800 black, winged flies (bbNn)
800 brown, wingless flies (Bbnn)
0 black, wingless flies (bbnn)
C200 brown, winged flies (BbNn)
600 black, winged flies (bbNn)
600 brown, wingless flies (Bbnn)
200 black, wingless flies (bbnn)
D600 brown, winged flies (BbNn)
200 black, winged flies (bbNn)
200 brown, wingless flies (Bbnn)
600 black, wingless flies (bbnn)
E800 brown, winged flies (BbNn)
0 black, winged flies (bbNn)
0 brown, wingless flies (Bbnn)
800 black, wingless flies (bbnn)
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Document Summary

Learning objectives: explain the evidence that suggests (a) species change in time and (b) are interrelated, describe the mechanism of evolution by natural section, summary of evidence supporting the plasticity and relatedness of species. Darwin and others have provided convincing evidence to support the idea that species have descended, with modification, from a common ancestor. Homology, the study of likeness, provides further evidence for the relatedness of organisms. Homology can be recognized and studied at three interacting levels: genetic, developmental, and structural. Genetic homology is a similarity in the dna sequences of different species. A main example is the genetic code itself. Usually done by looking at relatedness of sequences in the genome. Further back in time you share with a common ancestor, the more time that passes for changes in the dna sequence. Developmental homology is a similarity in embryonic traits. An example is the gill pouches found during embryonic development in chicks, humans, and cats.

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