Q. X linked dominant trait tends to be milder in heterozygous females. State if it is true or false.

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Q. In a family of four including a normal mother, a normal father, a color blind son and a normal son; who do you think has the defective X gene other than the affected son?

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Q. A colorblind mother and a normal father give birth to a Klinefelter child with normal vision. Where do you think the non-disjunction has taken place?

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Q. If colorblindness was a dominant trait, which of the following would not be true?

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Q. What is the probability that the son of a color blind father would be color blind?

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Q. Y linked inheritance is _______________ inheritance.

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Q. Which of the following is wrong?

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Q. Which of the following is a Y linked gene?

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Q. Which of the following is partially sex linked?

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Q. A turner child born to normal parents is haemophilic. Where did the non-disjunction occur?

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Q. Both Drosophila and mammals have XY system of sex determination. Dosage compensation y inactivation of one X chromosome is seen in ___________________

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Q. Barr bodies are found ________________

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Q. The X inactivation in female occurs by the process of lyonisation.

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Q. If a chromosome loses its XIC due to deletion it will_______________________

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Q. Due to the translocation process, the XIC from one X chromosome in a woman passed to chromosome 3. The individual died. What were the probable reasons of death?

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Q. Lysonization takes place ____________

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Q. _____________________ determines which X chromosome remains active.

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Q. Which one of the following is the only active gene in the inactivated X chromosome?

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Q. X inactivation is an example of epigenetic phenomenon.

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Q. XIST mRNA coats the inactive X and calls in _____________

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