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

Clathrin-coated pits and vesicles, Clathrin-coated pits and vesicles are in...

Clathrin-coated pits and vesicles are included in both the endocytosis   of material   at the plasma membrane and the exocytosis of proteins from the Golgi   apparatus.  Electron

How are the main classes of arthropods classified, How are the main classes...

How are the main classes of arthropods classified according to the presence of larval stage in their embryonic development? In crustaceans there are species with direct and oth

Show examples of cnidarians, Q. What are few examples of cnidarians? In whi...

Q. What are few examples of cnidarians? In which environments can these animals be found? Hydra, Jellyfish, sea anemones and corals are good examples. All of them are aquatic,

What are the grasslands of north america, What are the grasslands of North ...

What are the grasslands of North America and of South America respectively called? The steppe grasslands of North America are known as prairies. The grasslands of South America

Logistic equation, In order to define growth limit logistic equation was gi...

In order to define growth limit logistic equation was given by Verhulst. In a given ecosystem, the maximum population that can exit is called carrying capacity (k).  The factors wh

Oracle clinical, evolutionary effect of Oracle clinical applications in Pha...

evolutionary effect of Oracle clinical applications in Pharmaceutical industries

Name the process in that substances carry across membrane, Substances which...

Substances which are insoluble in a membrane are carried across membrane with concentration gradient by means of a carrier molecule in a process termed as: a) Diffusion. b)

Difference between medullated and non-medullated fibres, DIFFERENCE S BETW...

DIFFERENCE S BETWEEN MEDULLATED AND NON-MEDULLATED NERVE FIBRES       1. Medullated (Myelinated) Nerve Fibres Medullary sheath is present.

Endoplasmic reticulum (er), Endoplasmic reticulum (ER) is the network of m...

Endoplasmic reticulum (ER) is the network of membranous tubules in the cytoplasm of a cell; involved in production of the phospholipids, proteins, and the other functions. Rough E

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