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Crossing over occurs at……………stranded sta...

Crossing over occurs at……………stranded stage.

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**Step-by-Step Solution:** 1. **Understanding Crossing Over**: Crossing over is a process that occurs during meiosis, specifically during the prophase stage. It involves the exchange of genetic material between homologous chromosomes. 2. **Identifying the Relevant Phase**: The prophase of meiosis is divided into several stages, and the specific stage where crossing over is most prominent is called the zygotene phase. 3. **Formation of Chromosome Structures**: During the zygotene phase, homologous chromosomes come together to form pairs, known as bivalents or tetrads. This is where the chromosomes are aligned closely enough to allow for crossing over. ...
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MODERN PUBLICATION-PRINCIPLES OF INHERITANCE AND VARIATION-MEMORY TEST (B. Complete the missing links)
  1. Crossing over occurs in stage of prophase - I of .

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  2. A chromosome having more than two chromatids is called as…………….

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  3. Jacob and Wollman named hereditary particles as………which can exist in t...

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  4. Linkage and crossing over are…………related.

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  5. More the …………..between two genes,the more ate the chances of ……………

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  6. Three examples of chemical mutagens are……………,…………….and …………….

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  7. The inborn errors of metabolism are gene controlled and are inherited ...

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  8. When there are more than two sets of genomes in a cell,the cell is sai...

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  9. Crossing over occurs at……………stranded stage.

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  10. Human females are homogametic and males are………..

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  11. Mutant Drosophilla with white eyes was found by………….

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  12. Transmission of a trait from father to daughter then to gradson is cal...

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  13. Morgan received the nobel prize in ……..for his pioneering work in gene...

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  14. When a particular chromosome rejoins in reverse orientation ,mutation ...

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  15. When a particle chromosome is present in three copies,the cell is a………...

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  16. A pair of genes may be identified as a linked if their recombination f...

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  17. Extra nuclear genes are usually present in mitochondria and…………..

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  18. Gene mutations alter the information conveyed by a………….

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  19. A,B,O blood grouping in human beings is based on………….

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