Instructions

You have just invented a new method that allows you to collect sperm from a man and determine the genotype at two loci/genes (E and F) in individual sperm cells. The E allele, for big ears, is dominant to the wild-type e allele. The F allele, for football shaped heads, is dominant to the wild-type fallele. These two loci are on chromosome 12. Two men, Bud and Rich, both have football-shaped crania and big ears, 100 sperm cells from each man are collected and the genotypes are determined for E and F. Bud was found to have sperm in the ratios: Rich was found to have sperm in the ratios: Genotype # of sperm Genotype # of sperm EF 42 EF 8 ef 42 ef 8 Ef 8 Ef 42 eF 8 eF 42 According to these results, the distance between E and Fis: A. 42 CM for Bud and 8 CM for Rich B.8 CM for both Bud and Rich C. >50 CM for Bud and 16 cM for Rich D. 16 CM for both Bud and Rich E. >50 CM for both Bud and Rich

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