Table of contents

1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

3. Extensions to Mendelian Inheritance

Understanding Independent Assortment

Genetics

3. Extensions to Mendelian Inheritance

Understanding Independent Assortment

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Multiple Choice

Why don't some traits segregate independently during meiosis?

Because meiosis does not involve the separation of homologous chromosomes

Because all traits are always inherited together regardless of chromosome location

Because independent assortment only occurs in prokaryotes

Because the genes controlling these traits are located close together on the same chromosome (linked genes)

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Verified step by step guidance

Understand the principle of independent assortment, which states that genes located on different chromosomes are inherited independently during meiosis due to the random orientation of homologous chromosome pairs.

Recognize that genes located close together on the same chromosome tend to be inherited together because they are physically linked; this phenomenon is called genetic linkage.

Recall that during meiosis, crossing over (recombination) can occur between homologous chromosomes, which may separate linked genes if they are far enough apart, but closely linked genes have a lower chance of being separated.

Conclude that traits controlled by genes that are close together on the same chromosome do not segregate independently because they tend to be inherited as a group, violating Mendel's law of independent assortment.

Therefore, the reason some traits do not segregate independently during meiosis is due to the physical proximity of their controlling genes on the same chromosome, leading to genetic linkage.