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 best describes hybrid vigor (heterosis) in genetics?

The suppression of one gene's expression by another non-allelic gene.

The phenomenon where offspring of genetically diverse parents exhibit greater biological fitness than their parents.

The occurrence of two different alleles at a single gene locus in an individual.

The process by which two genes located on the same chromosome are inherited together.

Previous problemNext problem

Verified step by step guidance

Understand the term 'hybrid vigor' or 'heterosis' as it relates to genetics, which involves the performance or fitness of offspring compared to their parents.

Recognize that hybrid vigor refers to a situation where offspring from genetically diverse parents show improved or enhanced traits, such as growth rate, fertility, or survival.

Differentiate hybrid vigor from other genetic concepts: gene suppression (epistasis), heterozygosity (presence of two different alleles at a locus), and genetic linkage (inheritance of genes located close together on a chromosome).

Identify that hybrid vigor is specifically about increased biological fitness or vigor in the offspring due to genetic diversity between the parents.

Conclude that the best description of hybrid vigor is the phenomenon where offspring of genetically diverse parents exhibit greater biological fitness than their parents.