Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Q. Explain Cytological Evidence?
Cytology is the study of the morphology and physiology of cells. The information about the chromosome number, shape and pairing at meiosis is used for classification purpose. Cytotaxonomy refers to the use of chromo, some number and morphology as data for classification. Cytogenetics includes those studies dealing with observations of chromosome pairing or behaviour at meiosis. In angiosperms haploid number of chromosomes ranges from n=2 in Haplopapus gracilis (compositae) to around n= 132 in Poa littoroa (Gramineae). Most angiosperms have chromosome numbers ranging between n=7 and n=12. About 30 to 40 per cent of flowering plants are polyploids. Polyploids are organisms that have higher chromosome numbers because of multiplication of chromosome sets. In flowering plants there are several kinds of 26 polyploids number relationship, Pinus (Pinaceae) is homoploid with n=12, while in composite family the different species having n=90, 18 and 27. are present. There are still other genera with numbers that show no simple numerical relationship to one another (aneuploids) e.g. Brassica (Cruciferae) with n=6,7,8,9 or 10. Base number and chromosome size is useful in understanding relationships in the grass family. Because relatedness of taxa is often reflected in homology of the chromosomes, pairing at meiosis in hybrids of two species helps in understanding relationships of closely related species. You should know that higher the percentage of pairing at meiosis in hybrids of two species the more closely the plants are presumed to be related. In animals there are now more reliable karyotypes for about 1,000 species of mammals, birds and insects.
What is hydrogen bonds? Hydrogen Bonds : Hydrogen bonds form between polar molecules, such as water. Each water molecule has two positively charged hydrogen poles, and one ne
Define in brief about the term - MRI MRI is a more recent development that was initially introduced as a rival to CT. The technique itself is complex, relying on measurement o
State the prevention of Campylobacteriosis Prevention: the various ways to prevent campylobacteriosis are: Wash hands before preparing foods. Wash hands immediatel
Q. Can you explain Ventricular Septal Defect? VSD can be found in various part of ventricular septum hence all possible views except suprasternal views are used to detect an
Explain about the term accommodation. Normally, the human eye focuses at objects at infinity, without exerting any power. This implies that while a person is observing an objec
How different are oxyhemoglobin and hemoglobin? Where is it expected to find a higher concentration of oxyhemoglobin, in peripheral tissues or in the lungs? Oxygen-bound hemogl
Define plasma as Fluid Compartment - extracellular fluid? Plasma is the only major fluid compartment that exists as real collection of fluid all in one location. It differs fro
"Height" is an example of a gene, but "Short" is an example of...
Freshwater Animals In Figure you have seen that the body fluids of freshwater animals are hyperosmotic to their aqueous surroundings. This results in two-kinds of osmotic prob
MECHANIS M OF FERTILIZATION - The process of fertilization complete into 5 steps - 1 . APPROACH OF SPERM TO OVUM For fertilization sperm & ova interaction is
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!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd