After Dan Levitis and his wife lost two pregnancies, before having their three children, he was drawn to investigate why pregnancy loss is so common, and whether other living beings face the same struggle his family did. 569 kata lagi
Tag » Meiosis
During meiosis II, the chromosomes condense and become attached to a new spindle apparatus (prophase II). They then move to positions in the equatorial plane of the cell (metaphase II), and their centromeres split to allow the constituent sister chromatids to move to opposite poles (anaphase II), a phenomenon called chromatid disjunction. 277 kata lagi
Today, we reviewed chromosomes and sexual vs. asexual reproduction briefly. We went over the PowerPoint below and previewed vocabulary for the upcoming material. The important terminology was: autosome, somatic, meiosis, mitosis, haploid, diploid, gametes, chromosome, homologous chromosome, sister chromatids, and fertilization.
1. How does meiosis differ from mitosis? What is the ploidy number of the products in both processes?
Mitosis is a process of asexual reproduction in which the cell divides in two producing a replica, with an equal number of chromosomes in each resulting diploid cell. 665 kata lagi