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Class 12 Biology Practice Test: Inheritance Principles - Punnett Square
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Class 12 Biology Practice Test: Inheritance Principles - Punnett Square
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25 Questions

1. Which mathematical expression can be used to obtain the genotypic ratio of F2 offsprings from the gametes of the F1 progeny?
2. What does the second law of Mendel state?
3. What is the genotype of a plant showing a dominant phenotype of violet flowers if it is test crossed and produces both violet-flowered and white-flowered plants?
4. Who deserves the credit to discover Punnett square?
5. The ratio of phenotypes observed in progeny after a cross has been performed is called ________
6. Mendel proposed three laws of inheritance based on his studies involving monohybrid crosses in pea plants.
7. Which law explains the expression of the dominant phenotype in the F1 progeny?
8. The factors that Mendel postulated occur in triplets.
9. What filial generation exhibits a genotypic ratio of 1:2:1?
10. Self-crossing of dwarf plants from F2 generation will produce _____
11. Which of the following is not a law postulated by Mendel?
12. What is represented in the boxes of the Punnett square?
13. Upon self-fertilization of Aa with itself, the probability of A gamete fusing A and a gamete is equal.
14. What is the second law of Mendel called?
15. The ratio of genotypes observed in progeny after a cross has been performed is called ________
16. What diagram is used to study the production of zygotes in F1 and F2 generation?
17. What gametes are produced by a Vv heterozygous plant?
18. According to the law of dominance, what are the discrete units that control the characters?
19. Which of the following is not a statement of the principle of dominance?
20. What is the genotype of a plant showing a dominant phenotype of violet flowers if it is test crossed and produces only violet-flowered plants?
21. Where are the parental genotypes mentioned in a Punnett square?
22. What are the rules postulated by Mendel based on his studies of inheritance in pea plants called?
23. Which of the following is the correct number of offsprings produced by self-fertilization of a heterozygous pea plant for a trait that exhibits Mendelian genetic pattern?
24. Which law explains the expression of the dominant phenotype in the F2 progeny?
25. What is the first law of Mendel termed as?

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