Which term describes organ systems that work together and maintain steady internal conditions when external conditions change? a. tissues

b. neurons

c. cooperation

d. homeostasis

What is the genotype of the male circled in pink? ο χου lo xay xaya done answer was xay

How are fossils most commonly formed

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.