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

1. Introduction to Genetics

Fundamentals of Genetics

Genetics

1. Introduction to Genetics

Fundamentals of Genetics

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Multiple Choice

In a genetic cross between flies heterozygous for body color and wing size, 16% of the offspring show recombinant phenotypes. What is the recombination frequency between the genes for body color and wing size?

50%

16%

32%

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Verified step by step guidance

Understand that recombination frequency is the percentage of offspring that show recombinant phenotypes, which result from crossing over between two genes during meiosis.

Identify the recombinant offspring percentage given in the problem, which is 16%. This directly represents the recombination frequency because it measures how often recombination occurs between the two genes.

Recall the formula for recombination frequency: \\ $\text{Recombination Frequency} = \frac{\text{Number of recombinant offspring}}{\text{Total number of offspring}} \times 100\%$

Since the problem states that 16% of the offspring are recombinant, this means the recombination frequency is 16%.

Interpret the recombination frequency as a measure of the genetic distance between the two genes, where 1% recombination frequency corresponds to 1 map unit (centimorgan) on the chromosome.