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

What does vacuoles do, What does vacuoles do? It is an organelle, locat...

What does vacuoles do? It is an organelle, located in the cell's cytoplasm, which is the site of protein synthesis. It is really a protein having of 2 parts. These 2 "parts"

What are the lethal genes, What are the lethal genes? The Lethal genes ...

What are the lethal genes? The Lethal genes are genes having at least one allele that, while present in the genotype of an individual, causes death. There are dominant lethal a

What is meant by suction force of the plant cell, What is meant by suction ...

What is meant by suction force of the plant cell? Does the suction force facilitate or make difficult the entrance of water into the cell? As the vacuolar solution is hypertoni

Abnormal violent contractions of skeletal muscles, Person Z swallowed a lar...

Person Z swallowed a large amount of substance X and, as a result, has convulsions (abnormal violent contractions of skeletal muscles).  Swallowing which of the following substance

Define prevention of vitamin a deficiency, Define Prevention of vitamin A d...

Define Prevention of vitamin A deficiency? Since dietary inadequacy is the major cause for micronutrient deficiencies, the most rational approach to prevent these deficiencies

Advantages and disadvantages in usage of solid fuels, Advantages (1)   ...

Advantages (1)   Liquid and gaseous fuels can be manufactured from solid fuels. (2)   Relatively cheap and easily available. (3)   These are easy to transport. (4)   A

Handling animals in lab, Handling : The desire for survival is same whethe...

Handling : The desire for survival is same whether in animals or human beings. You may be aware of the ability of even tiny animals to scratch and bite. So we won't say any more o

Where in living beings can found mineral salts, Q. Which are mineral salts?...

Q. Which are mineral salts? Where in living beings can found mineral salts? Ans. Mineral salts are simple inorganic substances made of metallic chemical elements, like sodiu

Define prognosis of eating disorders, Define Prognosis of Eating Disorders?...

Define Prognosis of Eating Disorders? About 50% of the patients recover fully from anorexia nervosa and achieve normal weight, 30% improve but have a partial recovery and 20% w

Blunt or non-penetrating injury, Blunt or Non-penetrating Injury When ...

Blunt or Non-penetrating Injury When body is struck by a blunt object such as steering wheel or blows to chest with blunt object. External injury may appear minor but the

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