During metaphase 1, the chromosomes line up in the middle of the cell. The way the chromosomes line up is , or independent. This independent alignment results in different possible arrangements or assortments of chromosomes during metaphase. This in turn results in different of chromosomes in cells. During sexual reproduction, the traits that are determined by the genes on these chromosomes are passed on from parents to offspring.

The observations of hooke and van leeuwenhoek documenting the existence of microscopic cells formed the basis of what important theory? a. the cell theory stating that all living things are composed of cellsb. the theory of spontaneous generation, which held that life forms could arise spontaneouslyc. the theory of chemotherapy, or use of antimicrobials to destroy pathogenic organismsd. the germ theory of disease and causative agents

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

Which of these outcomes is a negative impact of postindustrial societies on the environment? a. nomadic ways b. overpopulation c. overgrazing d. resource renewal