Below is another practice quesiton for you! You should be able to solve it in about 15 minutes.
Great questions from your textbook include:
Chapter 4 #11, 12 13, 48, 49 and 42: determining genotypes, allelic configurations and map distances from a scenario and a data set;
Chapter 4 #37, 50, 56, 51: predicting genotypic and phenotypic frequencies from a testcross given the map distances and the genotype of the trihybrid;
Chapter 4 #54 and 36: dealing with 4 genes.
Also, check out the 'paper-saving page' for more info on 3 points tescrosses.
Cheers
Pam
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