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Class 12 Biology Practice Test: Inheritance Principles - Chromosomal Theory of Inheritance
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Class 12 Biology Practice Test: Inheritance Principles - Chromosomal Theory of Inheritance
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25 Questions

1. What does the chromosomal theory of inheritance state?
2. Who was responsible for the experimental verification of chromosomal theory of inheritance using fruit flies?
3. What phase of Meiosis results in the different combinations of chromosomes occurring in the germ cells?
4. The variations observed in the daughter cells arise during Metaphase I.
5. The variations occurring due to meiosis are due to the independent segregation of chromosomes during Metaphase II.
6. Which of the following is not an advantage of using fruit flies?
7. Which of the following organisms is easy to culture on artificial medium in a laboratory setting?
8. What were the colored bodies observed in the nucleus during the process of division called?
9. If the cell at G1 phase at 2 Giga base pairs of DNA, what is the DNA content of the cell right after Telophase II?
10. What was the contribution of Correns, von Tschermak, and de Vries to Mendel’s work?
11. What is the scientific name of fruit fly?
12. Which theory states that the segregation of one chromosomal pair during meiosis is independent of the other chromosomal pairs?
13. What theory was coined by Sutton and Boveri?
14. Genes occur in pairs.
15. Who was responsible for the theory of chromosomal inheritance?
16. Chromosomes occur _________; genes occur _________
17. If the cell at G1 phase at 2 Giga base pairs of DNA, what is the DNA content of the cell right before Telophase I?
18. If the cell at G1 phase at 2 Giga base pairs of DNA, what is the DNA content of the cell right before Telophase II?
19. In fruit flies, females are larger in body size than males.
20. Alleles of a gene are located on ________
21. When does the first segregation of chromosomes occur during meiosis?
22. One of the significant drawbacks of Mendel’s work was _________
23. When does the second segregation of chromosomes occur during meiosis?
24. The lack of publicity of Mendel’s work was due to _______
25. When does the first segregation of genes occur during meiosis?

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