Which process during meiosis is responsible for the different appearance of siblings of the same parent? a. fertilization of the egg and the sperm to form the zygote b. random movement of chromosomes to separate poles of the cell c. pairing up of homologous chromosomes during metaphase of meiosis ii d. parent cell dna replicates several times and then divides into multiple cells

Which description best defines the nervous system and its two main branches? a: the message center of the body, split into the autonomic nervous system and the somatic nervous system b: the control panel of the body, split into the central nervous system and the exterior nervous system c: the message center of the body, split into the central nervous system and the peripheral nervous system d: the control panel of the body, split into the brain and the spinal cord