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

Male reproductive system - seminal vesicles, SEMINAL VESICLES (UTERUS MESCU...

SEMINAL VESICLES (UTERUS MESCULANIS) - Seminal vesicles are elongated, convoluted, musculo glandular sac about 4 cm long ( 9 cm if straightened). Lined by pseudostratified e

What is signifying by suction force of the plant cell, Q. What is signifyin...

Q. What is signifying by suction force of the plant cell? Does the suction force facilitate or make difficult the entry of water into the cell? The suction force (SF) is the os

Explain the physiologic mechanism of osseointegration, Q. Explain the Physi...

Q. Explain the Physiologic mechanism of osseointegration It has been suggested that the physiologic mechanism for maintaining osseous integration is a sustained evolution in re

Explain how a water molecule is produced, Explain how a water molecule is p...

Explain how a water molecule is produced when glucose and fructose undergo a condensation reaction. The glucose molecule releases a hydroxide ion, OH -, and the fructose molec

Zoonoses disease-poxvirus zoonoses, Poxvirus zoonoses Naturally occurring ...

Poxvirus zoonoses Naturally occurring poxvirus infections affect humans and many species of animals and insects. However, for most part, poxviruses other than variola cause self-l

Define contractile protein - biological functions of protein, Define Contra...

Define Contractile Protein - biological functions of protein? These proteins take part in contractile processes like muscle proteins also those found in other cells and tissues

Determine the purposes of vital signs, Determine the purposes of vital sign...

Determine the purposes of vital signs The vital signs reflect the functioning of vital organs of the body i.e. heart, brain and lungs. They indicate the basic functions of body

Illustrate briefly about titanium, Illustrate briefly about titanium I...

Illustrate briefly about titanium It is generally accepted that pure titanium has little cytotoxicity and it is suggested that the plaque induced inflammation may be due to cr

Chest examination of new born, Chest Observe for retraction of the...

Chest Observe for retraction of the intercostal muscle which is indicative of severe respiratory distress (a sign of hyaline membrane  disease).  Inspect the brea

Explain the axonal terminal portion, What is an example of a situation in w...

What is an example of a situation in which the neuron cell body is located in a part of the body and its axonal terminal portion is in another distant part of the body? Why does th

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