Y-linked traits in humans, Biology

Y-Linked traits in humans

Any gene that occurs exclusively on the Y chromosome is said to be holandric and it is not expressed in females. Such a Y-linked gene normally occurs in males and is transmitted only from father to son - holandric inheritance. Only a few Y-linked genes have been identified uptil now. One is the histocompatibility gene, known as the H-Y gene which is present on the short arm of the Y chromosome. Another important Y-linked gene is the TDF gene that codes for testis detprnining factor. This locus plays an important role in primary sex determination.

Another phenotype known to be associated with the Y chromosome is the condition hypertrichosis. The gene concerned with this condition leads to the developnlent of hairy pinna. This phenotype has been observed ill the inhabitants of Australia, Ceylon, Israel, and India.

Posted Date: 12/11/2012 4:45:38 AM | Location : United States

Related Discussions:- Y-linked traits in humans, Assignment Help, Ask Question on Y-linked traits in humans, Get Answer, Expert's Help, Y-linked traits in humans Discussions

Write discussion on Y-linked traits in humans
Your posts are moderated
Related Questions
Determine Causes of Iron Deficiency Anaemia? Dietary Inadequacy Poor bioavailability of iron Presence of absorption interfering substances in diet Poverty and

Isomerization of  citrate Isomerization of  citrate:   In  this  step,  citrate is isomerized to isocitrate by aconitase which has iron-sulphur centre as  its prosthetic  grou

Immediate Post-operative Care The patient is accompanied to the ICU by a surgeon, anesthetist and the nurse who assisted for the surgery with portable ventilator and ECG

In what ways can we try to protect a species from extinction? We can attempt to protect species from extinction by making it illegal to kill the threatened animals or uproot o

Noise Exposures - Factors Affecting Occupational Health Various equipment and processes generate noise of varying intensity and - frequency. In this respect ventilation system

EPIDIDYMIS - All seminiferous tubules form short straight tubules as tubuli recti, open into wider network of rete testis. From rete testis 15-20 fine convoluted tubules,

PHOBIA S - Common phobias for - Spiders Lizards Snakes Cockroach Crowded places Vast open places Closed small chambers.

Estimate the molar mass of protein? An aqueous solution of the protein bovine serum albumin, containing 2:00 *10 -2 g of protein per cubic centimeter, has an osmotic pressure

How is lymph propelled through the lymphatics? Some of the larger lymphatics are capable to contract, or else the lymph is propelled by body muscles which contract and 'squash'

characteristic of spider that makes it the phylum arthropoda?