Lampbrush chromosomes, Biology

Assignment Help:

LAMPBRUSH CHROMOSOMES

  1. Discovered by Ruckert.
  2. Lampbrush Chromosomes were seen in Oocytes of several different animals like shark, amphibians, reptiles and birds. (Most distinct in Diplotene stage).
  3. Giant size of these Chromosomes is due to increase in size of Chromonema (not due to number). Chromonema grows in size to form lateral loops.
  4. Synthesis of m-RNA occurs on lateral loops.
  5. Lampbrush    Chromosomes    concerned    with vitellogenesis. (Yolk formation)

572_lampbrush chromosomes.png


Related Discussions:- Lampbrush chromosomes

Circulatory system, Circulatory system, closed is a system which uses a co...

Circulatory system, closed is a system which uses a continuous series of the vessels of different sizes to deliver blood to body cells and return it back to the heart; it is found

What is p-k reaction, The response produced when an allergen is injected in...

The response produced when an allergen is injected into an individual, who is sensitive is known as P-K reaction.

Describe assist control ventilation, Describe Assist Control Ventilation (A...

Describe Assist Control Ventilation (ACV) The machine delivers a set tidal volume at the set rate; besides, each time the patient breathes on his own, a machine breath is init

How did pasteur experiment vary from spallanzani, How did Pasteur's experim...

How did Pasteur's experiment vary from Spallanzani's experiment? Instead of sealing the flask in the experimental group after boiling, Pasteur used a flask with a curved neck,

Define brain stem, Define Brain Stem Brain stem consists of three parts...

Define Brain Stem Brain stem consists of three parts i.e. midbrain, pons and medulla oblongata. The functions of the Brain Stem are: Brain stem contains points of cranial

What do you mean by age pyramids, Q. What are age pyramids? Age pyramid...

Q. What are age pyramids? Age pyramids are the graphical representations in form of superposed rectangles each representing the number of individuals included in age ranges int

Does rna molecule have two polynucleotide chains like dna, Does RNA molecul...

Does RNA molecule have two polynucleotide chains like DNA? Only DNA has two polynucleotide chains. RNA is produced by just one polynucleotide chain. Nucleic Acid Review - Im

Describe digestion of this breakfast, Your breakfast consists of a cup of b...

Your breakfast consists of a cup of black coffee with sugar as well as a plain bagel covered with cream cheese. Describe the digestion of this breakfast as it passes through each m

What is nucleotides, If 15% of the nucleotides in a DNA molecule contain gu...

If 15% of the nucleotides in a DNA molecule contain guanine, what percentage of the nucleotides having each of the other three bases? Describe your reasoning. As guanine and cy

Enzymes, what is rennin? how does it work? and what is its optimum pH level...

what is rennin? how does it work? and what is its optimum pH level and activity temperature?

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd