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A test cross of F1 flies +a/+b produced the following offspring

++/ab=9ab/ab=9+b/ab=41a+/ab=41

What will be distance between linked gene :-

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Important Questions on Principles of Inheritance and Variation

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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 12
Human embryo have all the genetic instructions, it needed to become a male or female. The male foetus have a master gene which acts as a biological switch, turning other genes on and off. Loss of this gene results in female which remain sexually immature. This master gene is located on:
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 13
A man and woman are both affected by vitamin D resistance rickets, which is a dominant sex-linked allele. All of the female offsprings of this couple are affected with rickets but some of the male offsprings are not. What are the genotypes of the parents?
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 14
Depending upon the distance between any two genes which is inversely proportional to the strength of linkage, cross overs will vary from :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 15
What shall be the ratio of heterozygous, homozygous normal and colourblind hemizygous in offsprings of a colour blind husband & a carrier wife :-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 16
A and B genes are linked. What shall be genotype of progeny in a cross between AB/ ab and ab/ab :
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 17
Mendelian dihybrid and dihybrid with linkage are respectively related with how many chromosomes : -
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 18
In Drosophila the XXY condition leads to femaleness whereas in human beings the same condition leads to Klinefelter syndrome in male. It proves
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 19
Based on observation on monohybrid crosses Mendel draw some conclusion. Which of the following is not correct-