> For the complete documentation index, see [llms.txt](https://docs.abi.am/abi-omicss-guide-2021/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.abi.am/abi-omicss-guide-2021/week-2.md).

# Week 2

- [Molecular Biology](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology.md): We begin Week 2 with molecular biology and pick up where we left off. This module takes an estimated 3 hours to complete.
- [DNA Proofreading And Repair](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology/dna-proofreading-and-repair.md): This page takes an estimated 20 minutes to complete.
- [Telomeres and Telomerase](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology/telomeres-and-telomerase.md): This page takes an estimated 15 minutes to complete.
- [Genes](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology/genes.md): This page takes an estimated 45 minutes to complete.
- [The One Gene, One Enzyme Hypothesis](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology/the-one-gene-one-enzyme-hypothesis.md): This page takes an estimated 15 minutes to complete.
- [Transcription](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology/untitled.md): This page takes an estimated 1 hour to complete
- [Translation](https://docs.abi.am/abi-omicss-guide-2021/week-2/molecular-biology/translation.md): This page takes an estimated 30 minutes to complete.
- [R Programming](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming.md): We pick up where we left off in week 2 of R Programming. This module takes an estimated 4 hours to complete.
- [Data Types (continuation)](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming/data-types-continuation.md): This page takes an estimated 45 minutes to complete.
- [Reading Data](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming/reading-data.md): This page takes an estimated 20 minutes to complete.
- [Subsetting](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming/subsetting.md): This page takes an estimated 35 minutes to complete.
- [Control Structures](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming/control-structures.md): This page takes an estimated 30 minutes to complete.
- [Functions](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming/functions.md): This section takes an estimated 45 minutes to complete.
- [Scoping Rules](https://docs.abi.am/abi-omicss-guide-2021/week-2/r-programming/scoping-rules.md): This page takes an estimated 1 hour to complete.
- [Week 2 Exam](https://docs.abi.am/abi-omicss-guide-2021/week-2/week-2-exam.md): Complete this exam after you finish Week 2 course material.