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
- 19. Cancer Genetics29m
- 20. Quantitative Genetics1h 26m
- 21. Population Genetics50m
- 22. Evolutionary Genetics29m
20. Quantitative Genetics
QTL Mapping
2:02 minutes
Problem 29a
Textbook Question
Textbook QuestionA comparison of the embryonic eye in cavefish and lakefish revealed that both reach approximately 4 mm in diameter. However, lakefish eyes continue to grow, while cavefish eye size is greatly reduced. Speculate on the role of the genes involved in this problem.
Verified Solution
This video solution was recommended by our tutors as helpful for the problem above
Video duration:
2mPlay a video:
Was this helpful?
Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Gene Regulation
Gene regulation refers to the mechanisms that control the expression of genes, determining when and how much of a gene product is made. In the context of cavefish and lakefish, differences in gene regulation may lead to variations in eye development, influencing the size and growth of the eyes in response to environmental factors.
Recommended video:
Guided course
09:22
Review of Regulation
Evolutionary Adaptation
Evolutionary adaptation is the process through which species evolve traits that enhance their survival and reproduction in specific environments. Cavefish, living in dark environments, may have adapted to reduced eye size due to the lack of light, while lakefish, in well-lit conditions, continue to develop larger eyes, showcasing how environmental pressures shape genetic traits.
Recommended video:
Guided course
04:55
Overview
Developmental Biology
Developmental biology studies the processes by which organisms grow and develop, including the formation of structures like eyes. The differences in eye size between cavefish and lakefish can be attributed to variations in developmental pathways influenced by genetic factors, highlighting how developmental biology intersects with genetics in shaping phenotypic traits.
Recommended video:
Guided course
11:19
Segmentation Genes
Related Videos
Related Practice