Chromosomes, Biology

Assignment Help:

Chromosomes

  1. Karl Nageli and Hofmeister observed chromosomes in pollen mother cells of Tradescantia.
  2. Chromosome name proposed by Waldeyer.
  3. During cell division, chromatin threads become condensed to form thick structures called chromosomes.
  4. Structure of chromosomes can be best studied at metaphase stage as chromosomes are most condensed.
  5. Plant cell possess normally larger chromosomes then the animal cells. (Trillium have longest chromosomes 32 mm at metaphase).
  6. Monocot plants have larger chromosomes as compared to dicot plants.
  7. Haploid set of chromosomes alongwith all its genes are called genome. In somatic cells of animals and higher plants there are two genomes. Their gamets or gametophytic cells have one genome.

Related Discussions:- Chromosomes

How does refrigeration help to stop food from going bad, How does refrigera...

How does refrigeration help to stop food from going bad?   Western diets are often unhealthy due to they have too much sugar and fat, and not sufficient fibre.

Excretion, What is the excretion for agamalizard

What is the excretion for agamalizard

Transferring the patient form icu to ward, Transferring the Patient form IC...

Transferring the Patient form ICU to Ward The patient is made to ambulate in ICU before shifting to ward . vitals are stabilized. The ward nurse is explained the pa

Show the circulatory system present in arthropods, Q. What is the kind of c...

Q. What is the kind of circulatory system present in arthropods? Do these animals have respiratory pigments and heart? In arthropods the respiratory system is open (lacunar). B

What do all organic compounds contain, What do all organic compounds contai...

What do all organic compounds contain? The key element is carbon. Organic compounds are all carbon-having compounds. By definition, an organic compound having carbon. Alt

Criteria for diagnosis of respiratory failure, Criteria for Diagnosis of Re...

Criteria for Diagnosis of Respiratory Failure PaO 2 , PaCO 2 , > 50 mm Hg.  Vital Capacity Respiration > 30/min or below 8/min.

Explain the intracellular perfusion fluid, At 1 AM, a healthy squid giant a...

At 1 AM, a healthy squid giant axon is placed in a bath of normal squid physiological extracellular saline and is internally perfused with normal squid intracellular saline.

Explain about the qualitative tests for carbohydrates, Explain about the Qu...

Explain about the Qualitative Tests for Carbohydrates? This section will familiarize you with simple techniques and tests to identify carbohydrates in a laboratory. The objecti

Entropy, Entropy is the degree of disorder in a system. As the energy is t...

Entropy is the degree of disorder in a system. As the energy is transferred from one form to another form, some of it is lost as heat; as the energy decreases, the disorder in sys

What is circulation, Q. What is circulation? Circulation is the movemen...

Q. What is circulation? Circulation is the movement of substances like gases within blood vessels and nutrients and cavities throughout the organism. Q. Do all animals have

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