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

Previous problemNext problem

Struggling with Genetics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

With respect to snapdragon flower color, which of the following inheritance patterns did Mendel's laws fail to fully explain?

Incomplete dominance

Sex-linked inheritance

Complete dominance

Codominance

Previous problemNext problem

Verified step by step guidance

Recall Mendel's laws, which primarily describe inheritance patterns based on complete dominance, where one allele completely masks the effect of another.

Understand that in complete dominance, the phenotype of the heterozygote is identical to the dominant homozygote, which Mendel's laws explain well.

Recognize that snapdragon flower color exhibits incomplete dominance, where the heterozygote shows an intermediate phenotype between the two homozygotes, not explained by Mendel's complete dominance model.

Differentiate incomplete dominance from codominance, where both alleles are fully expressed simultaneously, and from sex-linked inheritance, which involves genes on sex chromosomes.

Conclude that Mendel's laws fail to fully explain incomplete dominance because the heterozygote phenotype is distinct and intermediate, unlike the all-or-nothing expression Mendel described.