--%>
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 : Neurons and the glial cells State the

    State the functional differences between the neurons and the glial cells?

    		•
  • Q : Define Biomass Biomass : Sources of

    Biomass: Sources of Biomass can take various forms and shapes. It can be solid in form as in agricultural wastes, waste wood  from forestry and industry, wastes from food and paper industries, green municipal solid waste (MSW), dedicated energy c

    		•
  • Q : Consideration of Personality -

    This consideration differences of focal persons is important for at least three reasons. 1. Some people arouse hostility and aggression in their associates while others invoke sympathy and supportive responses because of their personality features. Likewise, some people encourage while ot

    		•
  • Q : Explain Manpower Planning Manpower

    Manpower Planning: This is also termed as Human Resource Planning consists of putting right number of people, right type of people at the right place, at right time, doing the right things for which they are suitable for the accomplishment of goals of

    		•
  • Q : Describe Capacity Planning Capacity

    Capacity Planning: This is any strategy which is employed to identify the quantity of production needed to satisfy the demand for the services and goods produced by a business. The thought is to balance the buy of resources, the maintenance of product

    		•
  • Q : What do you mean by osmotic pressure

    What do you mean by osmotic pressure?

    		•
  • Q : What are phospholipids What are

    What are phospholipids? Explain in brief.

    		•
  • Q : Describe the term pentoses Describe the

    Describe the term pentoses? To what organic class do pentoses belong? Are nucleotides made of only one kind of pentose?

    		•
  • Q : Protective structures of the central

    Describe the protective structures of the central nervous system existed in vertebrates?

    		•
  • Q : Describe the typical shape of poriferans

    Describe the typical shape of poriferans?

    		•