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TLS Online TPP Program

#Question id: 785

Several types of very short RNAs repress—or silence—expression of genes with homology to those short RNAs. They are produced from a variety of sources and direct the silencing of genes in the following different ways-

#SCPH06 I Botany

  1. Triggering destruction of the mRNA encoded by the target gene

  2. Inhibiting translation of the mRNA

  3. Inducing chromatin modifications within the target gene and thereby silencing its transcription

  4. All of the above

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TLS Online TPP Program

#Question id: 3277

#SCPH28 | Zoology

Which of the following describes the most likely order of events in allopatric speciation?
TLS Online TPP Program

#Question id: 3278

#SCPH06 I Botany

What does the biological species concept use as the primary criterion for determining species boundaries?
TLS Online TPP Program

#Question id: 3278

#SCPH28 | Zoology

What does the biological species concept use as the primary criterion for determining species boundaries?
TLS Online TPP Program

#Question id: 3279

#SCPH06 I Botany

Which two of the following have operated to increase divergence between mosquito fish populations on island?

a. improved gene flow

b. bottleneck effect

c. sexual selection

d. founder effect

e. natural selection
TLS Online TPP Program

#Question id: 3279

#SCPH28 | Zoology

Which two of the following have operated to increase divergence between mosquito fish populations on island?

a. improved gene flow

b. bottleneck effect

c. sexual selection

d. founder effect

e. natural selection
TLS Online TPP Program

#Question id: 3280

#SCPH06 I Botany

Small populations are threatened by the loss of genetic diversity from

a. Inbreeding

b. Genetic drift

c. Limited mating