How much does a marine biologist make? According to the U.S. Bureau of Labor Statistics records from May 2012, the 18,650 marine and wildlife biologists employed throughout the United States earn a mean annual marine biologist salary of $62,500, which translates to an average hourly wage of $30.05.
metaphase (ËmÉtÉËfeÉªz) n 1. (Biology) the second stage of mitosis during which the condensed chromosomes attach to the centre of the spindle. metâ¢aâ¢phase (ËmÉt ÉËfeÉªz) n. the stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle.
Prior to metaphase I, the chromosomes replicated and so every chromosome is a pair of sister chromatids. So, 56 x 2 = 112 chromosomes. These chromosomes have also undergone crossing over during prophase I so the sister chromatids are no longer identical as in metaphase of mitosis.