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. What is Barr body Genes?
Located inside nuclear envelope, it's a densely staining object which is an inactivated X chromosome in female mammalian cells. Most Barr body genes aren't expressed. They are reactivated in gonadal cells that undergo meiosis to form gametes. Female mammals are a mosaic of two different types of cells, those with an active maternal X and those with an active paternal X. Which of the two Xs will be inactivated is concluded randomly in embryonic cells. After an X is inactivated, all mitotic descendants will have same inactive X. As a consequence, if a female is heterozygous for a sex-linked trait, about half of her cells will express one allele and the other cells well express alternate allele. Illustrations of this type of mosaicism are coloration in calico cats and normal sweat gland development in humans. A woman who is heterozygous for this trait has patches of skin and patches of skin lacking sweat glands. X chromosome inactivation is related with DNA methylation. Methyl groups (-CH3) attach to cytosine, one of DNA's nitrogenous bases. Barr bodies are highly methylated compared to actively transcribed DNA. What determines which of two X chromosomes would be methylated? - A newly discovered gene, XIST is active only on the Barr body. Product of the XIST gene, X-inactive specific transcript, is an RNA; multiple copies of XIST attach to X chromosome inactivating it.
Name the Associated Foods used in bacillus cereus Cereal dishes that contain corn and corn starch, mashed potatoes, vegetables, minced meat, liver sausage, milk, cooked meat.
Phenetic Classification This system is based exclusively upon face value of observed characters without direct reference to phylogeny. The taxa are either classified on the basi
What do enzymes do, and how? How is enzyme activity regulated in cells? How do ATPases u se ATP to make reactions go?
The common nitrogen-fixer in paddy fields is: 1. Rhizobium 2. Azospirillum 3. Oscillatoria 4. Frankia Azospirillum is the common nitrogen-fixer in paddy fields
What are the adaptions flatworms neeed in order to live in their environment?
Phase (different interference) Contrast microscopy: Living cells are mostly transparent. For viewing under ordinary light microscope, therefore, live cells must be stained wi
Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4
Q. Illustrate Chromosome Structure? Cytologists have studied chromosome morphology and have pointed out that the most interesting feature about the chromosome structure is the
Q. Which are the heart chambers respectively where the entrance and the exit of blood occur? The heart chambers through which blood enters the heart are the atria there are the
TRISACCHARIDES The oligosaccharides are made of three monosaccharide residues. A common trisaccharides is Raffinose which is formed by condensation of galactose-glucose-fr
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