Mitosis can occur in a diploid nucleus, that is, one containing pairs of chromosomes representing each of its parents or in a haploid one containing a single set of chromosomes. Meiosis, often called reduction division, yields four daughter nuclei with the number of chromosomes reduced to half the original number. The overall result is that one diploid nucleus becomes four haploid nuclei.
Aldebaran. n. 1. (Astronomy) a binary star, one component of which is a red giant, the brightest star in the constellation Taurus.ldebaran. n. 1. (Astronomy) a binary star, one component of which is a red giant, the brightest star in the constellation Taurus.
With an average apparent magnitude of 0.87 it is the brightest star in the constellation and is one of the brightest stars in the nighttime sky. The name Aldebaran is Arabic (Ø§ÙØ¯Ø¨Ø±Ø§Ù al-dabarÄn) and means the Follower, presumably because it rises near and soon after the Pleiades.In 1993 a substellar companion was reported.ased on present day observations, the position of Aldebaran has shifted 7â² in the last 2000 years; roughly a quarter the diameter of the full Moon. English astronomer William Herschel discovered a faint companion to Aldebaran in 1782; an 11th magnitude star at an angular separation of 117 â³ .