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

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Multiple Choice

Which of the following accurately compares the genome of humans to the genome of fruit flies?

Fruit flies have more genes than humans, but a smaller genome size.

Fruit flies have a larger genome size than humans.

Humans and fruit flies have approximately the same number of genes and similar genome sizes.

Humans have more genes and a larger genome size than fruit flies.

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Verified step by step guidance

Step 1: Understand the terms 'genome size' and 'number of genes'. Genome size refers to the total amount of DNA contained within one copy of a single genome, usually measured in base pairs or megabases (Mb). The number of genes refers to the count of distinct protein-coding sequences within that genome.

Step 2: Recall that humans have a genome size of approximately 3 billion base pairs and around 20,000-25,000 protein-coding genes, while fruit flies (Drosophila melanogaster) have a genome size of about 140 million base pairs and roughly 13,000-15,000 genes.

Step 3: Compare the genome sizes: humans have a much larger genome size than fruit flies, which means the total DNA content in humans is significantly greater.

Step 4: Compare the number of genes: humans have more genes than fruit flies, indicating a more complex set of protein-coding instructions.

Step 5: Conclude that the statement 'Humans have more genes and a larger genome size than fruit flies' accurately reflects the comparison between the two genomes.