Following statements are regarding to Kinetochore-microtubule interaction in S. cerevisiae.

A. In the simple kinetochore of S. cerevisiae, a protein complex called CBF3 associates with specialized, centromere-specific form of histone H3, called CENP-A.

B. The Ndc80 complexes initially make lateral interactions with a spindle microtubule and subsequently interact with a Dam1 complex, which forms a ring around the end of the microtubule. This interaction results in an end-on attachment of the centromere to the

spindle microtubule.

C. Microtubules that “capture” kinetochores are selectively stabilized by a reduction in the rate of catastrophes, which increases the chance that the attachment will persist.

D. With the two kinetochores attached to opposite poles, the duplicated chromosome is now under tension, being pulled in both directions by the one sets of kinetochore microtubules.

Which of the following combinations is correct?

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#Question id: 26888

#Unit 10. Ecological Principles

During the rate of succession several factors would be observe at the pioneer as well as climax community;

  Match the community stages with its given characters;

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#Question id: 10880

#Unit 10. Ecological Principles

Which marine zone would have the lowest rates of primary productivity (photosynthesis)?

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#Question id: 10881

#Unit 10. Ecological Principles

In deep water, which of the following abiotic factors would most limit primary productivity?

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#Question id: 10882

#Unit 10. Ecological Principles

The difference between net and gross primary productivity would likely be greatest for

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#Question id: 10883

#Unit 10. Ecological Principles

Ecosystem having a three trophic level in which number of species is given in table

 Total 50 number of link among these trophic levels present. What is value of connectance in ecosystem? 

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#Question id: 10884

#Unit 10. Ecological Principles

Herbivore ingests plant material with 1000 k j energy form producer and 300 kJ loss as feces waste; additionally herbivore invests 300 k j energy in respiration. What is production efficiency of that herbivore?