---### Understanding Genetic Linkage Maps and Test Crosses#### IntroductionAs a graduate student, you join a lab and you are looking through some old notebooks. You find a linkage map someone has drawn:```G-------15 mu-------T-------10 mu-------B```#### Genetic Linkage Map Explanation- **G, T, B**: These are genes.- **15 mu, 10 mu**: These represent map units (mu), indicating the distance between the genes. One map unit usually correlates to a 1% recombination frequency between genes.If you plan to complete a test cross with a GtB/gTb male:A) **What are all of the expected progeny genotypes?** B) **How many of each genotype would you expect if you collected 1000 progeny?**#### Detailed Analysis- **Parental Genotypes**: GtB and gTb.- **Expected Progeny Genotypes**: Given the distances, you will get recombinants and non-recombinants. Use the map units to predict the frequencies: 1. **Non-recombinants** (GtB and gTb) 2. **Single Crossovers** (at two regions: G-T and T-B) 3. **Double Crossovers** - **Expected Genotype Rates Based on Map Units**: - **G-T**: 15% single crossover. - **T-B**: 10% single crossover. - **Double crossover**: Multiply the single crossover frequencies across two regions (0.15 * 0.10 = 0.015 or 1.5%).#### Calculation for 1000 Progeny:- Total crossovers in G-T = 15% -> 150 progeny- Total crossovers in T-B = 10% -> 100 progeny- Double crossovers = 1.5% -> 15 progenySplit these crossovers equally and account for both single and double crossovers.Parental/Non-recombinant Types:- GtB (42.5%) -> 425- gTb (42.5%) -> 425Single Crossovers:- Gtb (7.5%) -> 75- gTB (7.5%) -> 75Double Crossovers:- gTB (1.5%) ->

Name: ---### Understanding Genetic Linkage Maps and Test Crosses#### Introd
Uploaded: 2024-03-20T06:43:04.000Z
Channel: Bartleby
Description: ---### Understanding Genetic Linkage Maps and Test Crosses#### IntroductionAs a graduate student, you join a lab and you are looking through some old notebooks. You find a linkage map someone has drawn:```G-------15 mu-------T-------10 mu-------B```