Table of contents

1. A Review of General Chemistry5h 5m
2. Molecular Representations1h 14m
3. Acids and Bases2h 46m
4. Alkanes and Cycloalkanes4h 17m
5. Chirality3h 39m
6. Thermodynamics and Kinetics1h 22m
7. Substitution Reactions1h 48m
8. Elimination Reactions2h 30m
9. Alkenes and Alkynes2h 9m
10. Addition Reactions3h 19m
11. Radical Reactions1h 58m
12. Alcohols, Ethers, Epoxides and Thiols2h 42m
13. Alcohols and Carbonyl Compounds2h 17m
14. Synthetic Techniques1h 26m
15. Analytical Techniques:IR, NMR, Mass Spect7h 3m
16. Conjugated Systems6h 13m
17. Ultraviolet Spectroscopy51m
18. Aromaticity2h 34m
19. Reactions of Aromatics: EAS and Beyond5h 1m
20. Phenols55m
21. Aldehydes and Ketones: Nucleophilic Addition4h 56m
22. Carboxylic Acid Derivatives: NAS2h 51m
23. The Chemistry of Thioesters, Phophate Ester and Phosphate Anhydrides1h 10m
24. Enolate Chemistry: Reactions at the Alpha-Carbon1h 53m
25. Condensation Chemistry2h 9m
26. Amines1h 43m
27. Heterocycles2h 0m
28. Carbohydrates5h 53m
29. Amino Acids4h 20m
30. Peptides and Proteins2h 42m
31. Catalysis in Organic Reactions1h 30m
32. Lipids 2h 50m
33. The Organic Chemistry of Metabolic Pathways2h 52m
34. Nucleic Acids1h 32m
35. Transition Metals6h 14m
36. Synthetic Polymers1h 49m

3. Acids and Bases

Organic Chemistry Reactions

Organic Chemistry

3. Acids and Bases

Organic Chemistry Reactions

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Multiple Choice

In a dihybrid cross involving linked genes, what percentage of the offspring will show recombinant phenotypes resulting from crossovers if the recombination frequency is 20%?

10%

20%

40%

80%

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Verified step by step guidance

Understand the concept of linked genes: Linked genes are located close to each other on the same chromosome and tend to be inherited together. However, recombination can occur during meiosis, leading to new combinations of alleles.

Define recombination frequency: Recombination frequency is the percentage of offspring that show new combinations of traits due to crossing over between linked genes. It is calculated as the number of recombinant offspring divided by the total number of offspring, multiplied by 100.

Identify the given recombination frequency: The problem states that the recombination frequency is 20%. This means that 20% of the offspring will exhibit recombinant phenotypes.

Apply the concept to the dihybrid cross: In a dihybrid cross involving linked genes, the recombination frequency directly indicates the percentage of offspring with recombinant phenotypes. Therefore, if the recombination frequency is 20%, then 20% of the offspring will show recombinant phenotypes.

Conclude with the understanding that the recombination frequency is a direct measure of the percentage of recombinant phenotypes in the offspring, which in this case is 20%.