Which statement best illustrates has an organism maintains homeostasis? Female barn swallows mate with long-tailed males.

Parents pass their traits to their offspring.

Desert pack rats are active at night to conserve water.

Young hawks have different kinds of feathers than adult hawks.

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.