TLS Online TPP Program

#Question id: 2993


During meiosis, a defect occurs in a cell that results in the failure of spindle microtubules binding at the kinetochores. Which of the following statements describes the most likely result of such a defect?

#Unit 2. Cellular Organization
  1. New microtubules with more effective binding capabilities to kinetochores will be synthesized to compensate for the defect.

  2. Excessive cell divisions will occur resulting in cancerous tumors and an increase in the chromosome numbers known as polyploidy.

  3. The defect will be bypassed in order to ensure normal chromosome distribution in the new cells.

  4. The resulting cells will not receive the correct number of chromosomes in the gametes, a condition known as aneuploidy.

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TLS Online TPP Program

#Question id: 4706

#Unit 11. Evolution and Behavior

Which of the following statements best explains why modification or change in an organ or tissue during the lifetime of an individual is not inherited?

TLS Online TPP Program

#Question id: 4705

#Unit 11. Evolution and Behavior

Darwin and Wallace's theory of evolution by natural selection was revolutionary because it ________.

TLS Online TPP Program

#Question id: 4704

#Unit 11. Evolution and Behavior

About thirteen different species of finches inhabit the Galápagos Islands today, all descendants of a common ancestor from the South American mainland that arrived a few million years ago. Genetically, there are four distinct lineages, but the thirteen species are currently classified among three genera. The first lineage to diverge from the ancestral lineage was the warbler finch (genus Certhidea). Next to diverge was the vegetarian finch (genus Camarhynchus), followed by five tree finch species (also in genus Camarhynchus) and six ground finch species (genus Geospiza). If the six ground finch species have evolved most recently, then which of these is the most logical prediction?

TLS Online TPP Program

#Question id: 4702

#Unit 11. Evolution and Behavior

Which of the following is correct match?

TLS Online TPP Program

#Question id: 4701

#Unit 11. Evolution and Behavior

Charles Darwin discussed all of the following EXCEPT:

TLS Online TPP Program

#Question id: 4700

#Unit 11. Evolution and Behavior

Which of the following is not an observation or inference on which natural selection is based?