Explain karyotype - animal taxonomy, Biology

Assignment Help:

Explain Karyotype - Animal Taxonomy?

In animals systematic, it is the karyotype, that is the chromosome number and structure which are used quite extensively either separately or both together.

chromosome number as you know is quite constant within a species, though it may vary from one species to another even within the same genera. Among animals the chromosome number ranges from a diploid of 2 in Parascaris  equorum vat univalins to 446 in the lycaenid butterfly (Lysandra  arlantica). However, in most animals it is between 12-60 chromosomes.

1914_Karyotype.png

figure: The phylogeny of Trichopternn families plotted on of chrmmme numbers (FhKiauia. 1%7).

Generally, the chromosome number is not enough for identifying organisms, though in some it has proved to be quite useful, as for example in the marsupial family Didelphidae (opossums) where species of genus (Monodelphis have a diploid number of 18 chromosomes and those of genus Didelphis have a diploid number of 22 chromosomes.

Similarly in the order of Trichoptera, the chromosome number alone has been used to plot the phylogenetic relationships among the various families as you can see in Figure.


Related Discussions:- Explain karyotype - animal taxonomy

Enumerate the history of neuropsychological, Enumerate the history of neuro...

Enumerate the history of neuropsychological The typical neuropsychological exam begins with a careful history taking. Areas of interest include: Medical history of patie

Which are the heart chambers, Which are the heart chambers respectively whe...

Which are the heart chambers respectively where the entrance and the exit of blood occur? The heart chambers by which blood enters the heart are the atria. There are the right

Temperature affecting the growth of microorganism, Temperature is one of th...

Temperature is one of the important factors affecting the process of growth in bacteria, as it has a bearing on chemical reactions. The temperature at which the maximum growth occu

What are nutritional care related to neurological disorder, What are nutrit...

What are nutritional Care related to Neurological Disorder? Let us then move on to the nutritional care. The important goals of nutritional care are to: prevent further

Chromosomes/genes/heredidty, Plot the amount of DNA in the nucleus of a spe...

Plot the amount of DNA in the nucleus of a spermatogonia from the G1 stage prior to the first meiotic division through the completion of meiosis. Label each of the major stages of

Define iron factors affecting absorption of dietary iron, Define Iron Facto...

Define Iron Factors affecting absorption of dietary iron? We have read earlier that iron in foods occurs either as haem or non-haem iron. Haem iron comprises of iron in combina

Help, #Predict: In order to be able to energize a transport protein by phos...

#Predict: In order to be able to energize a transport protein by phosphorylation (by addition of a phosphate group from ATP), the portion of the protein to which the phosphate grou

Chromosomes, Chromosomes  are the condensed, fibrillar, self- replicating g...

Chromosomes  are the condensed, fibrillar, self- replicating genetic structures of cells containing the cellular DNA which bears in its nucleotide sequence the linear array of gene

Example of structural function of organic molecules, Q. What are the few ex...

Q. What are the few examples of the structural function of organic molecules? Organic molecules have a structural function as they are part of cell membranes, organ walls, cyto

Define natural gums - hydrocolloids, Natural Gums These are derived fro...

Natural Gums These are derived from various plant as well as microbial sources and are divided into the following four basic categories: 1.  Seaweed gums:   Agar, Alginate,

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