Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 11152
TLS Online TPP Program

#Question id: 3866

Which of the following statements about E. coli RNA polymerase (core enzyme) is false?

#Section 3: Genetics, Cellular and Molecular Biology

  1. In the absence of the B subunit, core polymerase has little specificity for where initiation begins.

  2. he core enzyme contains several different subunits.

  3. The core enzyme has no polymerizing activity until the  subunit is bound.

  4. The RNA chain grows in a 5' -> 3' direction.

More Questions
TLS Online TPP Program

#Question id: 3260

#Section 3: Genetics, Cellular and Molecular Biology

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1 genotype is 0.04) The frequency of A2 allele is
TLS Online TPP Program

#Question id: 3261

#Section 3: Genetics, Cellular and Molecular Biology

A parent population (P) is change into daughter populations (Q) which grow in habitats. After 1000 generations, the equilibrium frequency distribution of of the daughter populations is shown in the figure below. For reference, the vertical line represents the mean of the parent population. Which type of natural selection?
TLS Online TPP Program

#Question id: 3262

#Section 3: Genetics, Cellular and Molecular Biology

In a population, the genotype frequencies are: f(A1A1)= 0.35; f(A1A2) = 0.30; f(A2A2) = 0.35; Which of the following statement is correct?
TLS Online TPP Program

#Question id: 3263

#Section 3: Genetics, Cellular and Molecular Biology

From an evolutionary point of view, plant tendrils derived from leaves and those derived from stems are examples of
TLS Online TPP Program

#Question id: 3264

#Section 3: Genetics, Cellular and Molecular Biology

Which of the following is (are) true of natural selection?
TLS Online TPP Program

#Question id: 3265

#Section 3: Genetics, Cellular and Molecular Biology

If the curve shifts to the left or to the right, there is no gene flow, and the population size consequently increases over successive generations, then which of these is (are) probably occurring?