Which of the following would be found in a person with a 45, X karyotype? [Selec

Question

Which of the following would be found in a person with a 45, X karyotype? [Select all that apply]

Female external genitalia

Barr body

SRY gene

Decreased fertility

1.75000 points   

QUESTION 11

Which of the following would be found in a person with a 46, XY karyotype, with an AR gene mutation? [Select all that apply]

Female external genitalia

Male internal anatomy

Barr body

Normal range of testosterone produced, but cells are not sensitive to its effects

SRY gene

1.75000 points   

QUESTION 12

Which of the following would be found in a person with a 47, XXY karyotype? [Select all that apply]

Female external genitalia

Male external genitalia

Low testosterone

SRY gene

Decreased fertility

Female external genitalia

Barr body

SRY gene

Decreased fertility

Explanation / Answer

Ans.10 Answer will be Female external genitilia and reduced fertility

As person with 45, X karyotype will have condition known as turner's syndrome. The affected person will always be female so will have female external genitilia. Barr body will be absent because there is no extra X chromosome. So female affected by turner's syndrome will not have barr body. Also the affected female does not have SRY gene (found in males). Maximumu of the affceted females will have infertility or reduced fertility.

Ans.11 Answer will female external genitilia, Male internal anatomy, Normal range of testesterone produced, but cellsare not sensitive to its effects and SRY gene

The mutation in AR gene will cause complete Androgen insensitivity syndrome which leads to development of female external genitilia and feamle characteristics but typically have male anatomy. The person will does not have barr body as does not have any extra X chromosome. Normal levels of testesterone will be produces by body does respond to it, as androgen receptor production is impaired. SRY gene is present as Y chromosome is present.

Ans 12 Answer will be Male external genitelia, low testesterone, SRY gene and decreased fertility.

The person with a 47,XXY karyotype will have Klienfelter's syndrome in which person will have decreased fertility and small testicles. Person will have low levels of testesterone and less intrest in sex. SRY gene is present as Y- chromosone is present

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