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

2. Mendel's Laws of Inheritance

Mendel's Experiments and Laws

Genetics

2. Mendel's Laws of Inheritance

Mendel's Experiments and Laws

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Multiple Choice

Mendel believed that the characteristics of pea plants are determined by which of the following?

Environmental factors alone

Discrete units of inheritance (genes) passed from parents to offspring

Random mutations occurring during the plant's lifetime

Blending of parental traits in each generation

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Verified step by step guidance

Understand the historical context: Gregor Mendel conducted experiments on pea plants to understand how traits are inherited from one generation to the next.

Recall Mendel's key conclusion: He proposed that traits are controlled by discrete units, which we now call genes, rather than by blending or environmental factors alone.

Recognize that Mendel's model contradicted the blending theory, which suggested offspring traits are a mix or blend of parental traits.

Note that Mendel's units of inheritance are passed unchanged from parents to offspring, explaining the consistent patterns of trait inheritance.

Therefore, the correct concept Mendel believed in is that characteristics are determined by discrete units of inheritance (genes) passed from parents to offspring.