TLS Online TPP Program

#Question id: 4738


Red kernel color in wheat results from the presence of at least one dominant allele of each of two independently segregating genes . Kernels on rr bb plants are white, and the genotypes R— bb and rr B— result in brown kernel color. Suppose that plants of a variety that is true breeding for red kernels are crossed with plants true breeding for white kernels produced F1 were allowed to selfing .what are F2 phenotype ratio ?

#Section 3: Genetics, Cellular and Molecular Biology
  1. 9:7          

  2. 9:3:4 

  3. 12:3:1                        

  4. 9:6:1

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TLS Online TPP Program

#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? 

TLS Online TPP Program

#Question id: 3340

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements is NOT correct regarding effect of genetic drift?

TLS Online TPP Program

#Question id: 3341

#Section 3: Genetics, Cellular and Molecular Biology

In a given population of 400 individuals, 64 percent of population is caused  cancer due to completely dominat allele B. Assuming the population is in Hardy- Weinberg equilibrium, which of the following is the expected proportion of individuals who are not expected to develop the cancer?

TLS Online TPP Program

#Question id: 3342

#Section 3: Genetics, Cellular and Molecular Biology

Neutral alleles are those that do not alter fitness and average reproductive success does not differ between individuals that carry one neutral allele or the other. The frequencies of these neutral alleles may change in a population by

TLS Online TPP Program

#Question id: 3343

#Section 3: Genetics, Cellular and Molecular Biology

Following genotype frequency as hardy Weinberg genetic equilibrium in figure. What is the frequency of A1 and A2 allele?

TLS Online TPP Program

#Question id: 3344

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following statements is NOT correct regarding effect of genetic drift?