Skip to main content

SEX CHROMOSOMES


 Sex chromosomes are sex determining chromosomes in males and females. In males the sex
chromosomes are XY, in females it is XX.
 Both males and females retain one of their mother's X chromosomes, and females retain their
second X chromosome from their father.
 The X chromosome is notably larger and has a more active euchromatin region.
 Because only males have the Y chromosome, the genes on this chromosome tend to be involved in
male sex determination and development.
 Genes in areas known as pseudoautosomal regions are present on both sex chromosomes. As a
result, men and women each have two functional copies of these genes. Many genes in the
pseudoautosomal regions are essential for normal development.
Labels:

Comments

Post a Comment

Popular posts from this blog

Banking (ICSE Class 10 Mathematics Project)

BANK ACCOUNT A bank account is a financial account between a bank customer and a financial institution. A bank account can be a deposit account, a credit card, or any other type of account offered by a financial institution. The financial transactions which have occurred within a given period of time on a bank account are reported to the customer on a bank statement and the balance of the account at any point in time is the financial position of the customer with the institution. a fund that a customer has entrusted to a bank and from which the customer can make withdrawals. BANK A bank is a financial institution and a financial intermediary that accepts deposits and channels those deposits into lending activities, either directly by loaning or indirectly through capital markets. A bank links together customers that have capital deficits and customers with capital surpluses. The word bank was borrowed in Middle English from Middle French banque, from Old Italian banca
39 comments
Read more

Sarvepalli Radhakrishnan- Class 10 History ICSE Project

Sarvepalli Radhakrishnan Sarvepalli Radhakrishnan listen    (5 September 1888 – 17 April 1975) was an Indian philosopher and statesman who served as the first Vice President of India (1952–1962) and the second President of India (1962-1967). Sarvepalli Radhakrishnan was born on September 5, 1888 at Tirutani, Madras in a poor Brahmin family. As his father was poor Radhakrishnan supported most of his education through scholarships.  His father worked as a subordinate revenue official in the service of a local zamindar (landlord) and the family was a modest one. He did not want his son to receive an English education and wanted him to become a priest. But life had other plans for the young boy.   Dr. Sarvepalli Radhakrishnan had his early education at Gowdie School, Tiruvallur and then went to the Lutheran Mission School in Tirupati for his high school. He joined the Voorhee's College in Vellore and later switched to the Madras Christian College. He chose Philosophy as his ma
Post a Comment
Read more
ANTERIOR ABDOMINAL WALL RECTUS SHEATH UNDER THE FOLLOWING HEADINGS:FORMATIONS AT DIFFERENT LEVELS,CONTENTS, APPLIED ANATOMY(LE) Rectus sheath is an aponeurotic sheath covering the rectus abdominis muscle It has 2 walls- anterior and posterior. Anterior wall- completely covers the muscle from end to end. It is firmly adherent to tendinous intersections of the rectus muscle Posterior wall – is incomplete, being deficient above the costal margin and below the                             arcuate line   It is free from the rectus muscle Formation Above the costal margin: Anterior wall- external oblique aponeurosis Posterior wall- deficient, rectus muscle rests on 5 th ,6 th , 7 th costal cartilages. Between the costal margin and arcuate line Anterior wall- external oblique aponeurosis                                            Anterior lamina of internal oblique aponeurosis Posterior wall- posterior lamina of internal obl
Post a Comment
Read more