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Which one of the following conditions though harmful in itself, is also a potential saviour from a mosquito borne infectious disease:

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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 4
Which of the four couples claiming the baby with O+ blood type are possibly the biological parents of it?
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 5
When a red grain variety of wheat is crossed with another white grain variety a F1 -hybrid is produced. On selfing of this F1 - hybrid, how many offsprings of F2 - generation resemble phenotypically to it's parents (let grain colour of wheat controlled by three gene pairs)
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 6
In a plant flower colour is the example of quantitative trait and controlled by one gene pair. How many plants show parental phenotype in F2 generation:-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 7
Grain colour in wheat is determined by three pairs of polygenes. Following cross AABBCC (dark colour) x aabbcc (light colour), in F2 generation what proportion of the progeny is likely to resemble either parent ?
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 8
The weight of fruit in a plant is determined by the number of dominant alleles of a certain number of genes. If seven weight categories are noticed, how many gene sites would be involved?
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 9
A scientist performed the gene mapping experiments in maize. He mapped the genes on chromosomes on the basis of % crossing over between different genes. One map unit corresponds to one % crossing over or recombination. The genes showing more than 50% recombination were not supposed to be linked on same chromosome. In crossing over studies on maize, scientist observed the following % crossing over between genes A,B,C,D- between. A and D 10%, between A and C 3%, between genes C and D 7%, between genes A and B 5%, and between genes C and B 8%. On the basis of above observation find cut the correct sequence of genes A,B,C and D on chromosomes:-
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 10
A man and a woman, who do not show any apparent signs of a certain inherited disease, have seven children (2 daughters and 5 sons). Three of the sons suffer from the given disease, but none of the daughters are affected. Which of the following mode of inheritance do you suggest for this disease?
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Beta Question Bank for Medical: Biology>Chapter 27 - Principles of Inheritance and Variation>EXERCISE- II (Previous Year Questions)>Q 11

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 :-