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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

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Multiple Choice

Which of the following correctly matches a stage of genomic imprinting with its description?

Erasure: Imprints are reinforced during embryonic development.

Maintenance: Imprints are erased in somatic cells after fertilization.

Establishment: DNA methylation patterns are set during gametogenesis.

Establishment: Imprints are removed from both parental alleles in the zygote.

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Verified step by step guidance

Understand the concept of genomic imprinting, which involves parent-specific gene expression regulated by epigenetic marks such as DNA methylation.

Identify the three main stages of genomic imprinting: Establishment, Erasure, and Maintenance.

Define the Establishment stage as the process during gametogenesis when DNA methylation patterns (imprints) are set on the parental alleles.

Define the Erasure stage as the removal of existing imprints, typically occurring in primordial germ cells to reset imprinting marks for the next generation.

Define the Maintenance stage as the preservation of established imprints during embryonic development and cell division, ensuring parent-specific expression is retained.