Data for a trend in temperature change in the Northern Hemisphere of Earth has been used
many times as evidence for global warming. Which
is the BEST method for determining the validity
of this conclusion?
Form a new hypothesis based on the new climate data.
(Repeat the research linking pollution emissions and global warming.
Evaluate the public response to laws passed based on this
conclusion
Examine the data collection process and replicate the data analysis
procedures

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.