RT 114. <p>The <b>Mount Hope Bridge</b> is a two-lane <a href=/pages/w/111852695494261>suspension bridge</a> spanning the <a href=/pages/w/110959148954433>Mount Hope Bay</a> in eastern <a href=/pages/w/108295552526163>Rhode Island</a> at one of the narrowest gaps in <a href=/pages/w/109279189090026>Narragansett Bay</a>.
For example, diploid human cells contain 23 pairs of chromosomes (46 total), half of maternal origin and half of paternal origin. Meiosis produces haploid gametes (ova or sperm) that contain one set of 23 chromosomes. When two gametes (an egg and a sperm) fuse, the resulting zygote is once again diploid, with the mother and father each contributing 23 chromosomes.
Notice that these four meiocytes are genetically different from one another. In humans (2 n = 46), who have 23 pairs of chromosomes, the number of chromosomes remains unchanged from the beginning till the end of meiosis II (n = 23). Prophase II. Spindle fibers reform and attach to centromeres in prophase II.