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Q.

Genes for which of the following are coded on the Y chromosome:

a) Haemophilia b) Testosterone c) Male pattern baldness d) Testis development

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Asked by Joyesh Chakraborty, 07 Sep '12 07:17 pm
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Answers (2)

 
1.

Testis development

X and Y chromosomes determine sex in humans. Two X chromosomes makes you female, while men have an X and a Y. The Y chromosome has just 344 genes - the fewest genes of all human chromosomes. A single gene on the Y chromosome (SRY) is responsible for development of a male foetus, including development of the testis. Haemophilia is a recessive trait resulting from faulty genes on the X chromosome. Males only have one X chromosome, so one faulty gene is enough to result in the condition. Women have two X chromosomes so would have to inherit faulty genes from both parents to develop haemophilia. Male pattern baldness is in part linked to sex hormone receptors, coded for on the X chromosome. Testosterone is a steroidal hormone manufactured in the body from cholesterol. It's not coded for by a gene.
Answered by TIGER, 07 Sep '12 07:17 pm

 
  
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2.

Pro Testosterone ! http://protestosteronesite.com
Answered by Charlescastroz Smith, 04 Oct '12 09:19 pm

 
  
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