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22. Carrier detection identifies people who are a) heterozygous for a recessive gene mutation b) homozygous for a recessive gene mutation e) heterozygous for the mutant gene but of normal phenotype d) A and B only e) B and Conly ab) A and C only 23. Identifying carriers of many mutant genes, and analyzing fetuses is important because most cases the genetic condition can be cured a) true b) false 24. Genetic counseling often starts with a) an amniocentesis b) chorionic villus analysis e) pedigree analysis d) chemotherapy 25. Fetal analysis can be done in one of two common ways a) chorionic villus sampling b) amniocentesis c) needle biopsy d) A and B e) B and C ab) A and 26. Historically the organisms that best fit the criteria of suitable experimental subjects have the following qualities EXCEPT a) matings produce a large number of offspring b) metabolize food well c) organism is easy to handle d) genetic variation must exist between the