A large outbreak of cholera occurred in Haiti after the hurr…
A large outbreak of cholera occurred in Haiti after the hurricane disrupted the sanitation infrastructure. The pathogen, Vibrio cholerae, secretes an enterotoxin that disrupts the electrolyte balance of the intestinal cells to cause watery diarrhea. Those with cholera can become severely dehydrated. Water samples from the surrounding bodies of water detected a high number of V. cholerae cells living there. Using the scenario above, match the words with the correct terms.
Read DetailsA series of experiments shows that oil content in a diploid…
A series of experiments shows that oil content in a diploid corn grain is influenced by five genes (a, b, c, d and e) with additive allelic effect. The highest (X) and the lowest (Y) oil producing corn lines have 20% and 0% oil in the grain, respectively. A plant of unknown genotype has an oil content of 12% from the cross between X and Y lines. What is a possible genotype for this plant? (“+” = additive allele and “-“ = allele is non additive; assume all loci have equal effect).
Read DetailsA scientist has determined the following variances for yield…
A scientist has determined the following variances for yield of corn in his fields (8): Additive genetic variance 30 Dominance genetic variance 50 Environmental variance 20 Assume that there is no genetic-environmental interaction variance. Calculate the narrow-sense heritability indicated by this data.
Read DetailsYou tested 20 peanut genotypes in 4 locations in Florida wit…
You tested 20 peanut genotypes in 4 locations in Florida with 3 reps/location. Write EMS (expected mean square) model to estimate variance components associated with genotype, locations, and genotype*location interaction. Estimate broad-sense heritability and genetic gain from the mean square values provided in question. Source of variation MS Values EMS Model Genotype 7.5 Location 3.4 Genotype* Location 1.2 Error 0.90
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