Table of contents

Skip topic navigation

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

Overview of interacting Genes

Genetics

3. Extensions to Mendelian Inheritance

Overview of interacting Genes

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

Which term best describes the phenomenon when several genes influence a single trait?

Polygenic inheritance

Epistasis

Pleiotropy

Codominance

Previous problemNext problem

Verified step by step guidance

Understand the definitions of the key terms given in the problem: Polygenic inheritance, Epistasis, Pleiotropy, and Codominance.

Polygenic inheritance refers to a single trait being influenced by multiple genes, each contributing to the phenotype in an additive or cumulative way.

Epistasis occurs when one gene affects or masks the expression of another gene, which is different from multiple genes influencing a single trait independently.

Pleiotropy describes a single gene that influences multiple, seemingly unrelated phenotypic traits.

Codominance is a pattern of inheritance where two different alleles of a gene are both fully expressed in the heterozygote, which is unrelated to multiple genes influencing one trait.