Table of contents

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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

1. Introduction to Genetics

Fundamentals of Genetics

Genetics

1. Introduction to Genetics

Fundamentals of Genetics

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Multiple Choice

Gametes must be haploid because:

Haploid cells are required for mitosis to occur.

Fertilization restores the diploid number in the offspring.

Only haploid cells can undergo DNA replication.

They need to contain twice the number of chromosomes as somatic cells.

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Verified step by step guidance

Understand the difference between haploid and diploid cells: haploid cells contain one set of chromosomes (n), while diploid cells contain two sets (2n).

Recall that gametes (sperm and egg) are produced through meiosis, which reduces the chromosome number by half, resulting in haploid cells.

Recognize that fertilization involves the fusion of two haploid gametes, restoring the diploid chromosome number in the offspring.

Analyze why gametes must be haploid: if they were diploid, fertilization would double the chromosome number each generation, which is not sustainable.

Conclude that the key reason gametes must be haploid is to ensure that fertilization restores the diploid number, maintaining chromosome stability across generations.