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MCQs for Principles of Inheritance and Variation
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MCQs for Principles of Inheritance and Variation
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25 Questions

1. Two or more independent genes present on different chromosomes which determine nearly same phenotype are called
2. Experimental verification of 'chromosomal theory of inheritance' was done by
3. In Antirrhinum (dog flower), phenotypic ratio in F2 generation for the inheritance of flower colour would be
4. The distance between the genes is measured by
5. How many types of gametes can be produced by a diploid organism who is heterozygous for 4 loci ?
6. Law of independent assortment can be explained with the help of
7. Mendel's Law of independent assortment holds good for genes situated on the
8. Which of the following crosses will give tall and dwarf pea plants in same proportions ?
9. A cross between two tall plants resulted in offspring having few dwarf plants. What would be the genotypes of both the parents ?
10. Which of the following is suitable for experiment on linkage ?
11. The colour based contrasting traits in seven contrasting pairs, studied by Mendel in pea plant were
12. Phenotypic and genotypic ratio is similar in case of
13. Which of the following trait is controlled by dominant autosomal genes ?
14. Trisomy is represented by
15. Failure of segregation of chromatids during cell division results in the gain or loss of chromosomes, this is called as
16. Inheritance of roan coat in cattle is an example of
17. What is the probability of production of dwarf offsprings in a cross betweeen two heterozygous tall pea plants ?
18. Which of the following will not result in variations among siblings ?
19. Genes which code for a pair of contrasting traits are known as
20. Which three scientists independently rediscovered Mendel's work ?
21. Rate of mutation is affected by
22. What can be the blood group of offspring when both parents have AB blood group ?
23. Conditions of a karyotype 2n±l and 2n + 2 are called
24. Mongolism is a genetic disorder which is caused by the presence of an extra chromosome number
25. 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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