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Cellular Reproduction

Cellular Reproduction. I – Interphase: Period between division DNA molecules duplicate Single strands (chromatin threads)  X shaped chromosomes P – Prophase: Centrioles move to opposite ends creating spindle in between Nuclear membrane disappears Chromosomes shorten and thicken

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Cellular Reproduction

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  1. Cellular Reproduction

  2. I – Interphase: • Period between division • DNA molecules duplicate • Single strands (chromatin threads) X shaped chromosomes • P – Prophase: • Centrioles move to opposite ends creating spindle in between • Nuclear membrane disappears • Chromosomes shorten and thicken • M – Metaphase: • Chromosomes line up along centre of spindle Mitosis

  3. A – Anaphase: • Chromatids separate at centromere with aid of spindle • T- Telophase: • Nuclear membrane forms around newly formed nucleus • Cytoplasm divides (Cytokinesis) Mitosis

  4. P1: Chromosomes visible as long threads  shrink then thicken & spindle forms • M1: Chromosome pairs arrange on spindle at centre • A1: Pairs break up, chromatids remain intact • T1: Cytoplasm divides • P2: see P1 • M2: Individual chromosomes arrange on spindle at centre • A2: Chromosomes break up at centromere into two chromatids • T2: see T1 Meiosis

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