What do you understand by chromosome behaviour, Biology

Assignment Help:

Q. What do you understand by Chromosome Behaviour?

When we study meiosis. we not only observe the regularity of pairing which is important' for' the fertility of the plants, we are also able to make a chromosome to chromosome comparison. This provides valuable information about the role of chromosomes in heredity. Taxonomists use this information to understand relationships amongst different species of plants. We can also determine the nature of the genome to find out if it is homozygous or heterozygous. Genome analysis in plant taxonomy has been particularly useful in understanding polyploidy add for establishing the parentage of polyploids. A very significant study in this regard is the case of the common hexaploid bread-wheat, Triticum ;aestivum. The genome of this economically important plant has been designated as AABBDD with 2n = 42 chromosomes. Detailed genome analyses have established that 3 diploid species have configured to the evolution of this hexaploid wheat. The A genome is from the diploid Triticum monococcum (2n = 14), the B genome is from a wild grass Aegilops speltiodes (2n = 14), and the D genome has been contributed by Aegilopssquarrosa (2n = 18).

Finally, we must remember that as with any other character, the value of 'cytotaxonomic data depends upon the group or category ,under investigation. A combination of cytological information with data from other disciplines will provide 'a more useful tool to the taxonomist.


Related Discussions:- What do you understand by chromosome behaviour

What are the different organ of the gastrointestinal system, The different ...

The different organs of the gastrointestinal system  Mouth or buccal cavity - Teeth 32 Permanent and - Tongue  Pharynx  Oesophagus  Stomach  Small Intestine

Define nutrient requirements during the periods of pregnancy, Define nutrie...

Define nutrient requirements during the periods of pregnancy? In the previous unit, we learnt about the basic principles of meal planning and the various considerations and gui

Phosphate group from an atp molecule, A molecule that acts by transferring ...

A molecule that acts by transferring a phosphate group from an ATP molecule to another molecule would be called: A) hydrolase. B) lipase. C) transferase. D) ligase. E) kinase.

Metabolic alterations and nutritional problems - cancer, Metabolic Alterati...

Metabolic Alterations and the Resultant Nutritional Problems/ Clinical Manifestations Associated With Cancer? Several research studies have shown that malignant growth (cancer)

Explain ventricular septal defects vsd chsude technique, Explain Ventricula...

Explain Ventricular septal defects VSD Chsude Technique ? Ventricular septal defects are closed on cardiopulmonary bypass. Approach is through median stemotomy. Ascending aort

Tissue level - level of body organization, Tissue Level - Level of body org...

Tissue Level - Level of body organization As you know a tissue is a group of cells similar in origin and structure that perform a specific function. The next level, is the tis

Describe about water expulsion vesicle, The water expulsion vesicle (also k...

The water expulsion vesicle (also known as a contractile vesicle) is an important osmoregulatory organelle in freshwater protists, which are hyperosmotic to surrounding water. Wate

Define biosystematics - animal taxonomy, Define Biosystematics - Animal Tax...

Define Biosystematics - Animal Taxonomy Biosystematics is basically synonymous with systematic, though it places more emphasis upon genetic (concerning inheritance) and cytolog

Respiration in animal, what is respiration in animals ,its functions ,types...

what is respiration in animals ,its functions ,types of respiration

How are mutagenic agents relates cancer to populations, How are mutagenic a...

How are mutagenic agents related to cancer incidence in a population? Is cancer a disease transmitted to the individual offspring? An exposition of a population to mutagenic ag

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