Template:BGDB Sexual Differentiation - Sex Determination Interactive: Difference between revisions

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| [[File:BGDsmall.jpg]]
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Here are a few simple Quiz questions that relate to Sex Determination from the lecture and practical.
Here are a few simple Quiz questions that relate to Sex Determination from the lecture and practical.


<quiz display=simple>
<quiz display=simple>
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|type="()"}
|type="()"}
- &nbsp; primordial germ cells
- &nbsp; primordial germ cells
|| Incorrect! The primordial germ cells are not involved in this initial sex determination step. The support cells in the genital ridge, forming the testes, express {{SRY}} and this leads to a cascade of signaling differentiating these cells into '''{{Sertoli cell}}s''', also called sustentacular cells of Sertoli.
|| Incorrect! The {{primordial germ cell}}s are not involved in this initial sex determination step. The support cells in the genital ridge, forming the testes, express {{SRY}} and this leads to a cascade of signaling differentiating these cells into '''{{Sertoli cell}}s''', also called sustentacular cells of Sertoli.
- &nbsp; anterior pituitary
- &nbsp; anterior pituitary
|| Incorrect! The anterior pituitary participates in later hormonal events. The support cells in the genital ridge, forming the testes, express {{SRY}} and this leads to a cascade of signaling differentiating these cells into '''{{Sertoli cell}}s''', also called sustentacular cells of Sertoli.
|| Incorrect! The anterior pituitary participates in later hormonal events. The support cells in the genital ridge, forming the testes, express {{SRY}} and this leads to a cascade of signaling differentiating these cells into '''{{Sertoli cell}}s''', also called sustentacular cells of Sertoli.
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|type="()"}
|type="()"}
+ &nbsp; short arm of the Y chromosome
+ &nbsp; short arm of the Y chromosome
|| Correct! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome
|| Correct! The gene for testes-determining factor {{SRY}} is located on the short arm of the {{ChrY}} chromosome
- &nbsp; long arm of the Y chromosome
- &nbsp; long arm of the Y chromosome.
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome
|| Incorrect! {{SRY}} (sex-determining region on the Y chromosome) gene was found in 1990 on the Y and the first {{SOX}} gene identified, the sry gene encodes a "testis-determining factor" a 204aa protein (Mr 23884 Da).
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome. {{SRY}} (sex-determining region on the Y chromosome) gene was found in 1990 on the Y and the first {{SOX}} gene identified, the sry gene encodes a "testis-determining factor" a 204aa protein (Mr 23884 Da).
- &nbsp; short arm of the X chromosome
- &nbsp; short arm of the X chromosome
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome. {{SRY}} (sex-determining region on the Y chromosome) gene was found in 1990 on the Y and the first {{SOX}} gene identified, the sry gene encodes a "testis-determining factor" a 204aa protein (Mr 23884 Da).
- &nbsp; long arm of the X chromosome
- &nbsp; long arm of the X chromosome
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome  
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome. {{SRY}} (sex-determining region on the Y chromosome) gene was found in 1990 on the Y and the first {{SOX}} gene identified, the sry gene encodes a "testis-determining factor" a 204aa protein (Mr 23884 Da).
- &nbsp; both the X and Y chromosomes contain these genes
- &nbsp; both the X and Y chromosomes contain these genes
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome  
|| Incorrect! The genes for testes-determining factors are located on the short arm of the {{ChrY}} chromosome. {{SRY}} (sex-determining region on the Y chromosome) gene was found in 1990 on the Y and the first {{SOX}} gene identified, the sry gene encodes a "testis-determining factor" a 204aa protein (Mr 23884 Da).
 
{The protein product of the gene SRY acts as a
|type="()"}
- &nbsp; growth factor
|| Incorrect! Sry acts as a transcriptional activator (HMG type-high mobility group) binding to DNA and initiating male sex determination then regulating male development.
- &nbsp; endocrine factor
|| Incorrect! Sry acts as a transcriptional activator (HMG type-high mobility group) binding to DNA and initiating male sex determination then regulating male development.
- &nbsp; receptor protein
|| Incorrect! Sry acts as a transcriptional activator (HMG type-high mobility group) binding to DNA and initiating male sex determination then regulating male development.
+ &nbsp; transcription factor
|| Correct! Sry acts as a transcriptional activator (HMG type-high mobility group) binding to DNA and initiating male sex determination then regulating male development.


</quiz>
</quiz>

Latest revision as of 13:19, 12 June 2019

Sex Determination Interactive Component

Attempt the Quiz - Sex Determination  
BGDsmall.jpg

Here are a few simple Quiz questions that relate to Sex Determination from the lecture and practical.


1 Sex determination occurs initially through the SRY transcription factor acting on the:

  primordial germ cells
  anterior pituitary
  testes support cells
  ovary support cells
  mesonephric duct cells

2 The cells in the adult male and female gonad forming from equivalent primordial cells in each sex are:

  Sertoli cells and thecal cells
  Leydig cells and interstitial cells
  primordial germ cells and oocytes
  thecal cells and interstitial cells
  ductus deferens and mesonephric ducts

3 The genes for testes-determining factors are located on the:

  short arm of the Y chromosome
  long arm of the Y chromosome.
  short arm of the X chromosome
  long arm of the X chromosome
  both the X and Y chromosomes contain these genes

4 The protein product of the gene SRY acts as a

  growth factor
  endocrine factor
  receptor protein
  transcription factor


BGDsmall.jpg
Practical 12: Sex Determination | Early Embryo | Late Embryo | Fetal | Postnatal | Abnormalities | 2011 Audio


Additional Information: SRY | testis | sertoli cell