Which of the following is not a characteristic of a tetrad? A. It exists only during meiosis I.

B. It contains two pairs of identical chromatids.

C. It contains a pair of homologous chromosomes.

D. It has only the haploid number of chromosomes.

ionic bonds are two oppositely charged ions that attract. a sodium ion has a 1 positive charge; a chloride ion has a 1 negative charge. sodium and chloride have oppostive charged ions that attract which forms an ionic bond. a chemical bond formed when two atoms share electrons is called