TLS Online TPP Program

#Question id: 2962


Which of the following experimental observations (some real, some contrived) would not be consistent with our current understanding of cytokinesis?

#I Life Science/ Life Sciences Group – I-V
  1. Anti-myosin antibodies injected in a dividing cell cause cytokinesis to stop.

  2. When the myosin II gene is mutated, cells undergo nuclear division, but not cytokinesis.

  3. Anti-actin antibodies injected into dividing cells have no effect on cytokinesis.

  4. Actin filaments seen in micrographs are aligned parallel to the cleavage furrow.

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TLS Online TPP Program

#Question id: 3259

#SCPH28 | Zoology

Different type of evolution leads to group of taxon in following three manners

A- group of taxon whose member have descended from common ancestor

B- when two lineages convergently  evolve similar character states form  groups that are recognized by pheneticists

c. taxon that include most recent ancestor but not all of its descendent

TLS Online TPP Program

#Question id: 3260

#SCPH06 I Botany

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: 3260

#SCPH06 I Botany

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: 3260

#SCPH28 | Zoology

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

#SCPH06 I Botany

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: 3261

#SCPH28 | Zoology

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?