A 20-1 stirred fermenter containing a Bacillus thuringiensis culture at 30°C is used for production of microbial insecticide, ka is determined using the dynamic method. Air flow is shut off for a few minutes and the dissolved-oxygen level drops; the air supply is then re-connected. When steady state is established, the dissolved-oxygen tension is 78% air saturation. The following results are obtained. Estimate ka.

#Question id: 3334

#Section 3: Genetics, Cellular and Molecular Biology

Red hair is a dominant trait in human. In a randomly mating population in Hardy-Weinberg equilibrium approximately 91% of individuals are red- haired. What is the frequency of the recessive allele?

#Question id: 3335

#Section 3: Genetics, Cellular and Molecular Biology

Consider hypothetical populations that have arisen from the mixing of migrants from different sources: f(AA)- 0.30   f(Aa)- 0.0     f(aa)- 0.70 After one generation of random mating within population, what will be genotypic frequencies?

#Question id: 3336

#Section 3: Genetics, Cellular and Molecular Biology

There are 4 alleles at a given locus in a diploid population and all alleles are equal abundant. What is the proportion of all homozygotes in the population?

#Question id: 3337

#Section 3: Genetics, Cellular and Molecular Biology

Small populations are threatened by a least loss of genetic variability is due to

#Question id: 3338

#Section 3: Genetics, Cellular and Molecular Biology

If the expected frequency of heterozygotes in a population (based on the Hardy–Weinberg law) is 0.4, but the observed frequency is 0.2, what is the inbreeding coefficient?

#Question id: 3339

#Section 3: Genetics, Cellular and Molecular Biology

In a plant species, flower color locus either homozygous or heterozygous with genotype RR-red, Rr- pink and rr- white. The Proportional of pink flower in generation 0 is .50.  What is the level of remaining pink flower in a third generation of repeated selfing?