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  • Hello Class, I am Professor Pickle Von Schnitzel, but you can call me Professor Pickle. Today we are going to learn all about Meiosis. Firstly, let's start off with vocabulary words and their functions.
  • Gamete: A mature haploid male or female germ cell which is able to unite with another of the opposite sex in sexual reproduction to form a zygote. Haploid: Having a single set of unpaired chromosomes. Diploid: containing two complete sets of chromosomes, one from each parent. Reduction Division: The first cell division in meiosis, the process by which germ cells are formed Homologous Chromosomes: chromosome pairs (one from each parent) that are similar in length, gene position, and centromere location. Crossing over: the exchange of genes between homologous chromosomes, resulting in a mixture of parental characteristics in offspring.
  • sister chromatids: identical copies (chromatids) formed by the replication of the chromosome, with both copies joined together by a common centromere. chromosome: a thread-like structure of nucleic acids and protein found in the nucleus of most living cells chromatin: the material of which the chromosomes of organisms other than bacteria (i.e. eukaryotes) are composed, consisting of protein, RNA, and DNA. centromere: the region of a chromosome to which the microtubules of the spindle attach
  • Now that we've learned all the vocabulary, let's go through the stages of Meiosis.  Before entering meiosis I, a cell must first go through interphase. the cell grows during the G1  phase, copies all of its chromosomes during S phase, and prepares for the division during G2 Phase. 
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