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

Basic working of midbrain, Q. Basic working of Midbrain? Midbrain: Also...

Q. Basic working of Midbrain? Midbrain: Also known as the mesencephalon, this part is located behind the frontal lobes and in the center of the entire brain. It deals with func

Carbohydrate metabolism, CARBOHYDRATE METABOLISM The endproducts of car...

CARBOHYDRATE METABOLISM The endproducts of carbohydrate digestion absorbed into the blood and taken to  the liver by  hepatic portal vein  are four  monosaccharide sugar  ( C 6

Why domain archaea are known to contain a true nucleus, Bacteria never have...

Bacteria never have a nucleus but some members of the domain Archaea are known to contain a true nucleus.

Determine the pre-conditions for gtt, Pre-conditions for GTT You are ad...

Pre-conditions for GTT You are advised to carry out the GTT (OGTT) test to confirm a diagnosis of diabetes mellitus for a person with: a) The history of glycosuria (glucose

Extra-embryonic membranes and placenta, Extra-Embryonic Membranes and Place...

Extra-Embryonic Membranes and Placenta The extra embryonic membranes like you already know provide nourishment and protection. These membranes are fundamentally similar to th

Name the two hormones produced by the pancreas, Name the two hormones produ...

Name the two hormones produced by the pancreas and say (a) in what circumstances, (b) in what way, they adjust the glucose concentration in the blood.

Which is better-scrubbing the instruments or ultrasonic bath, Q. Which is b...

Q. Which is better-scrubbing the instruments or ultrasonic bath to clean the instruments? Ultrasonic bath to clean the instruments is better than hand scrubbing the instruments

Some common air pollutants: particulates, Particulates: These are suspe...

Particulates: These are suspended droplets, solid particles or mixture of two. So all the atmospheric substances that are not gases are called particulates. A number of term

Energy transformation, ENERG Y TRANSFORMATION - During photosynthes...

ENERG Y TRANSFORMATION - During photosynthesis radiant energy is converted into chemical energy by green plants. In biluminiscent organisms .e.g glow worm, noctilluca &

Role of exercise and drugs in management of diabetes, Q. Role of Exercise a...

Q. Role of Exercise and Drugs in management of diabetes? Aerobic exercise for at least 20-30 minutes four or more times a week is recommended. Exercise after meals is preferre

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