Which of the following is not true about “yield”? a. the value of the actual yield must be given in order for the percent yield to be calculated b. the actual yield may be different from the theoretical yield because reactions do no always go to completion c. the percent yield is the ratio of the actual yield to the theoretical yield d. the actual yield may

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.