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

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

Which of the following statements is supported by the data from Mendel's control group matings?

Crossing two true-breeding plants with different traits always produces offspring with intermediate traits.

Self-fertilization of true-breeding pea plants produces offspring with the same phenotype as the parent.

Mendel's control group matings showed that dominant traits can skip a generation.

Control group matings in Mendel's experiments resulted in a 3:1 phenotypic ratio in the F1 generation.

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Verified step by step guidance

Step 1: Understand the purpose of Mendel's control group matings. Mendel used control groups to observe the inheritance pattern when true-breeding plants self-fertilize, ensuring no new genetic variation is introduced.

Step 2: Recall that true-breeding plants are homozygous for a trait, meaning they have two identical alleles. When these plants self-fertilize, their offspring inherit the same alleles, resulting in the same phenotype as the parent.

Step 3: Analyze the given statements in light of Mendel's findings: Crossing two true-breeding plants with different traits produces offspring with dominant traits, not intermediate ones; dominant traits do not skip generations; and the 3:1 ratio appears in the F2 generation, not the F1.

Step 4: Conclude that the statement supported by Mendel's control group data is that self-fertilization of true-breeding pea plants produces offspring with the same phenotype as the parent, confirming the stability of true-breeding lines.

Step 5: Summarize that Mendel's control group matings established the baseline for inheritance patterns, showing that true-breeding plants consistently pass on their traits without variation in the immediate offspring.