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Mendel’s law of independent assortment does not hold true for the genes that are located closely on

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Important Questions on Principles of Inheritance and Variation

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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 64
In maize, colored endosperm C is dominant over colourless c ; and full endosperm R is dominant over shrunken r. When a dihybrid of F1 generation was test crossed, it produced four phenotypes in the following percentage:
Coloured full - 48%
Coloured shrunken - 5%
Colourless full - 7%
Colourless shrunken - 40%
From this data, what will be the distance between two non-allelic genes?
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 65
Which of the following are reasons for Mendel’s success?
(i) Usage of pure lines or pure breeding varieties
(ii) Consideration of one character at a time
(iii) Maintenance of statistical records of experiments
(iv) Knowledge of linkage and incomplete dominance
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 67
If a polygenic inheritance is observed by three pair of genes  then the phenotypic ratio in F2 generation will be-
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 68
What proportion of the offspring obtained from cross AABBCC×AaBbCc will be completely heterozygous for all the genes segregated independently?
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 69
Refer the given statements and select the correct option,
(i) Percentage of homozygous dominant individuals obtained by selfing Aa individuals is 25% .
(ii) Types of genetically different gametes produced by genotype AABbcc are 2 .
(iii) Phenotypic ratio of monohybrid F2 progeny in case of Mirabilis jalapa is 3:1 .
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 73
Genes with multiple phenotypic effects are known as
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 74
When a single gene influences more than one trait it is called
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MTG OBJECTIVE NCERT AT YOUR FINGERTIPS BIOLOGY CLASS XI + XII>Chapter 28 - Principles of Inheritance and Variation>MCQS CORNER>Q 79
Which of the following is incorrect regarding ZW - ZZ type of sex determination?