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

7. DNA and Chromosome Structure

DNA as the Genetic Material

Genetics

7. DNA and Chromosome Structure

DNA as the Genetic Material

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Multiple Choice

Why is it possible to insert genetic code from a bacterium into the DNA of a mammal and have it be expressed?

Because mammals can only express genes from prokaryotes

Because the genetic code is nearly universal among all living organisms

Because bacterial DNA is identical in sequence to mammalian DNA

Because mammalian cells naturally contain bacterial plasmids

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Verified step by step guidance

Understand the concept of the genetic code: The genetic code consists of codons, which are sequences of three nucleotides that correspond to specific amino acids during protein synthesis.

Recognize that the genetic code is nearly universal: Almost all living organisms, from bacteria to mammals, use the same codon-to-amino acid assignments, meaning that a gene from one organism can be read and translated correctly in another.

Consider gene expression machinery compatibility: Because the genetic code is universal, the cellular machinery in mammals can interpret and translate bacterial genes into functional proteins.

Note that differences in DNA sequence (such as regulatory elements) may affect expression levels, but the core coding sequence can still be expressed due to the universal code.

Conclude that the universality of the genetic code allows for the transfer and expression of genetic material across diverse species, such as from bacteria to mammals.