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

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 of the following terms describes an interaction between two genes?

Penetrance

Pleiotropy

Incomplete dominance

Epistasis

Previous problemNext problem

Verified step by step guidance

Understand the definition of each term: Penetrance refers to the proportion of individuals with a particular genotype that actually displays the phenotype associated with the genotype. Pleiotropy occurs when one gene influences multiple phenotypic traits. Incomplete dominance is a form of inheritance where the phenotype of a heterozygote is intermediate between the phenotypes of the two homozygotes.

Recognize that the question is asking about an interaction between two genes, which means we are looking for a term that involves more than one gene.

Identify that epistasis is the term that describes an interaction between two or more genes, where the effect of one gene is modified by one or several other genes.

Differentiate epistasis from the other terms: Unlike penetrance, pleiotropy, and incomplete dominance, epistasis specifically involves interactions between different genes, rather than effects within a single gene or allele.

Conclude that the correct term describing an interaction between two genes is epistasis, as it involves one gene masking or altering the expression of another gene.