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What are pleiotropic genes? Explain with the help of an example.

Important Questions on Principles of Inheritance and Variation

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
In a mating between two mulattos, each heterozygous at all three gene loci for the skin colour, what is the chance their child will have very light skin?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
A pleiotropic gene
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism

The best example for pleiotropy is:

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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What will be number of gene pairs controlling a single character in polygenic inheritance if the phenotypic ratio obtained in F2 generation is 1 : 6 : 15 : 20 : 15 : 6 : 1?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What is pleiotropy? Give one example.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
One of the following is quantitative abnormality of polypeptide globin chain synthesis
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism

Human height is a multigenic character. If the heights of all the individuals living in a metropolis are measured and the percentages of the population belonging to a specific heat are plotted as shown below, which of the plots would represent the most realistic distribution?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What are complementary genes? Explain with the help of an example.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What do you mean by pleiotropy? Give example.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
The gene that controls many characters is called
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
Define polygenic inheritance.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
If one gene influences many phenotypic traits, the phenomenon is called
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What is the maternal effect? Explain with a suitable example.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
Choose the possible genotypes responsible for lightest skin colour in human beings.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What is co-dominance?
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
The inheritance of flower colour (pink) in Mirabilis jalapa is the example of 
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What are the differences between incomplete dominance and co-dominance? Explain with examples.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
Mutation in a single gene can lead to changes in multiple traits. This is an example of
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism
What is pleiotropy? Give one example of it.
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Biology>Genetics and Evolution>Principles of Inheritance and Variation>Deviations from Mendelism

Match the following 

   List - I     List - II
(a) Holandric genes (i) Pleiotropy
(b) Multiple effects of a single gene (ii) Hypertrichosis
(c) Skin colour in man (iii) Multiple Alleles
(d) ABO Blood types (iv) Polygenic inheritance

The correct answer is