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 statements about Notch1 is correct?

Notch1 functions as a ligand that binds to DNA to regulate transcription directly.

Notch1 is a transmembrane receptor involved in cell fate determination during development.

Notch1 is exclusively expressed in prokaryotic organisms.

Notch1 encodes a cytoplasmic enzyme that directly synthesizes DNA.

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the role of Notch1 in cellular biology. Notch1 is part of the Notch signaling pathway, which is crucial for communication between adjacent cells during development.

Step 2: Recognize that Notch1 is a transmembrane receptor, meaning it spans the cell membrane and transmits signals from outside the cell to the inside, influencing cell fate decisions.

Step 3: Eliminate incorrect options by recalling that Notch1 is not a ligand itself; rather, it binds ligands on neighboring cells to initiate signaling. It does not bind DNA directly to regulate transcription.

Step 4: Note that Notch1 is found in eukaryotic organisms, especially in animals, and is not expressed in prokaryotes, so the statement about exclusive prokaryotic expression is incorrect.

Step 5: Understand that Notch1 does not encode an enzyme that synthesizes DNA; its function is signaling, not enzymatic DNA synthesis.