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TLS Online TPP Program

#Id: 2517

DNA from Salmonella species, when digested with the restriction enzyme Xba I, gives around 15 fragments ranging from 25 kb to 680kb. This pattern of fragments, or ‘fingerprint’, is unique to that strain. If the same fingerprint is found from bacteria from other infected people, then it can be assumed that they were all infected from a common source which can be analyzed by PFGE

#Unit 13. Methods in Biology #Electrophoresis #Part B Pointers
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TLS Online TPP Program

#Id: 7347

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 7348

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 7349

#Unit 11. Evolution and Behavior
TLS Online TPP Program

#Id: 7350

#Unit 11. Evolution and Behavior

Loop method for inbreeding coefficient 
Summation of all possible loop (1/2)n
n= number of individuals in loop except than inbreeding
TLS Online TPP Program

#Id: 7351

#Unit 11. Evolution and Behavior

Negative assortative mating
People only select mates who are phenotypically different from themselves for selective traits. 
Increases the frequency of heterozygous genotypes (Aa).
TLS Online TPP Program

#Id: 7352

#Unit 11. Evolution and Behavior

Mutation
Mutation has changed the allelic frequency. it increases genetic variation within populations and between population.