Y-linked traits in humans, Biology

Assignment Help:

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.


Related Discussions:- Y-linked traits in humans

Physiological & socio psychological factor- public nutrition, Define Physio...

Define Physiological and Socio Psychological Factors - public nutrition? Food related behaviour depends on a combination of biochemical factors, mainly, physiological aspects a

Endomitosis, #questwhy and where endomitosis happens?ion..

#questwhy and where endomitosis happens?ion..

How age factors affect the requirement of protein, How age factors affect t...

How age factors affect the requirement of protein? Age: Protein in excess of maintenance needs is required, when a new tissue is being fornled. Certain age periods, when growth

Changes in animal life during xerosere, Changes in Animal Life during Xeros...

Changes in Animal Life during Xerosere Just like the hydrosere, there occur successive changes in animal life during the xerosere. A few mites are usually found associated wi

Transport of gases in blood, Transport of Gases in Blood We know that ...

Transport of Gases in Blood We know that two types of gas exchanges are constantly occurring in the animal body--one at the inter phase of the respiratory membrane and externa

Explain the energy - releasing metabolic process, The energy - releasing me...

The energy - releasing metabolic process in which substrate is oxidised without an external electron acceptor is known as: 1. Glycolysis 2. Fermentation 3. Aerobic respira

Pleural biopsy, Pleural Biopsy Pleural biopsy is one of the diagnostic...

Pleural Biopsy Pleural biopsy is one of the diagnostic procedure which may  cause lot of anxiety in  the patient. Procedure Pleural biopsies may be preformed surg

Define interaction of folate with vitamin c, Define Interaction of Folate w...

Define Interaction of Folate with Vitamin C? Vitamin C: Anaemia is observed in vitamin C deficient patients. Normochromic, normocytic or macrocytic or megaloblastic ana

Why red-green colour blindness is x-linked recessive, Red-green colour blin...

Red-green colour blindness is X-linked recessive. A woman with normal colour vision has a father who is red-green colour-blind. The woman has four sons, none of whom are colour-bli

Formation of gemmules, Formation of Gemmules Throughout the formation...

Formation of Gemmules Throughout the formation of gemmules, masses of food - laden amoebocytes called archaeocytes feed on other cells and lay down in within them. They get s

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