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.
Dideoxy Sequencing is the enzymatic determination and consideration of DNA or RNA sequence by the rechnique of Sanger and colleagues, based on incorporation of the chain terminati
Define role of Zinc in controlling Gene Expression? Zinc atoms have specific structural roles in enzyme molecules, as well as, in many other proteins and in bio membranes. Thes
What is Interdental Threaded Cleaners The use of floss is recommended around any implant-supported bridge, crown, or bar. Instruct the patient to wrap the floss around the impl
PHOSPHORUS It is present in vegetables, grains (oat metal, wheat meal), milk, eggs, cheese, meat, fish, etc. It helps in - (a) Like calcium it is a constituent of bones.
S-Adenosyl methionine serve as a donor of methyl sets in numerous biological reactions instance for in the formation of creatine phosphate and in the synthesis of nuc
a) Produce annotated diagrams that illustrate how nerve impulses travel i) along a neurone ii) across a synapse.
Based on your reading of the article "Origin of Life on Earth" which of the following is a false statement regarding how life developed? A. As proteins are needed for the repli
State two procedures which are used to reduce the chances of a kidney graft being rejected Drugs are used to suppress the patient's immune response to foreign tissue. The dono
WHERE DOES LIZARD LIVE
Define Endurance capacity by standard running tests? Endurance capacity, on the other hand, is measured by standard running tests in which time to exhaustion is taken as the en
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