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

Pleiotropy

Genetics

3. Extensions to Mendelian Inheritance

Pleiotropy

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Multiple Choice

Which of the following does NOT represent an explanation for pleiotropy?

A gene produces a protein that is expressed in multiple tissues throughout the organism.

A gene product is involved in several different biochemical pathways.

A single gene influences multiple, seemingly unrelated phenotypic traits.

A gene is located on a sex chromosome and is inherited in a sex-linked manner.

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Verified step by step guidance

Step 1: Understand the definition of pleiotropy. Pleiotropy occurs when a single gene influences multiple, seemingly unrelated phenotypic traits.

Step 2: Analyze each option to see if it fits the concept of pleiotropy. For example, if a gene produces a protein expressed in multiple tissues, it can affect multiple traits, which aligns with pleiotropy.

Step 3: Consider if the gene product being involved in several biochemical pathways could cause multiple phenotypic effects, which also supports pleiotropy.

Step 4: Recognize that a single gene influencing multiple traits directly matches the definition of pleiotropy.

Step 5: Identify that a gene being located on a sex chromosome and inherited in a sex-linked manner relates to inheritance pattern, not the gene's effect on multiple traits, so this does NOT explain pleiotropy.