--%>
Assignment Help - homework help

Primary and secondary constrictions of a chromosome

Define the primary and secondary constrictions of a chromosome? Write the other name provided to the secondary constriction?

E

Expert

Verified

Primary constriction is the narrower area of a condensed chromosome where the centromere, the structure which unites similar chromatids, is situated. Secondary constriction is an area identical to the primary constriction, narrower than the normal thickness of the chromosome as well, and in common it is associated to genes which coordinate the formation of the nucleolus and control the ribosomic RNA (or rRNA) synthesis. For this cause the secondary contrictions (which can be one or more in chromosome) is termed as nucleolus organizer region (or NOR).

   Related Questions in Biology

  • Q : Biological functions in which the

    What are the major biological functions in which the chlorine ions contribute?

    		•
  • Q : Sharing of electrons into hybrid orbital

    According to which rule the sharing of electrons into hybrid orbital occurs.

    		•
  • Q : Significance of proteins for living

    Write down the significance of proteins for living beings?

    		•
  • Q : How energy transferred along the food

    How energy transferred along the food chain?

    		•
  • Q : What is core competence Core

    Core competence: "A core competency is an area of specialized expertise that is the result of harmonizing complex streams of technology and work activity." Core competencies are the majority important value generat

    		•
  • Q : Describe Regulatory Affairs Regulatory

    Regulatory Affairs: It is a comparatively new profession that has developed from the desire of governments to protect public health by controlling the efficacy and safety products in regions comprising pharmaceuticals, medical devices, pesticides, vet

    		•
  • Q : Etiological agent of cutaneous

    Write down the etiological agent of the cutaneous leishmaniasis? How disease transmitted and what are its typical manifestations?

    		•
  • Q : Preferable among import quota or a

    Assume the government desire to limit imports of a certain good. Is it preferable to use an import quota or a tariff? Why?Changes in domestic consumer & producer surpluses are the similar under import quotas and tariffs. There will be a l

    		•
  • Q : Accessibility of organs for patients

    Most modern countries contain prohibitions on the trading of human organs in the market place. What effect do you believe such laws have had on the accessibility of organs for patients that need them? It is likely

    		•
  • Q : Pancreas as a mixed gland What do you

    What do you mean by the mixed gland? Why the pancreas is regarded as mixed gland?

    		•