wk3 - pedigree for a sex-linked trait See textbook Table...

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Covel Peer Learning – LS 4 (Rachel Care) Week 3 Week 2 Material: I. Vocabulary to get comfy with chromatin: heterochromatin: euchromatin: somatic cell: chromosomes: sex chromosomes: autosomes: homologous chromosomes: sister chromatids: centromere: ploidy:
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II. the Cell Cycle! -the phases of the cell cycle: -the mitotic phases: (pneumonic device: “_________________________________”) MITOSIS Outcome/purpose: ___________ _____________ _____________ _____________ ___________ SUMMARY: n = c = amount of DNA S phase mitotic division resulting cell
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MEIOSIS Outcome/purpose: Meiosis I: ____________ ____________ _____________ ______________ Meiosis II: _____________ _____________ _____________ _____________ SUMMARY: amount of DNA S phase 1st division 2 nd division resulting cell
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III. Sex-linked traits (1. look back at the Week 2 handout and fill in the identifying features of a
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Unformatted text preview: pedigree for a sex-linked trait! See textbook Table 4.5- page 111 in 3 rd edition) 2. What do we expect to see from an X-linked trait in the mother vs. the father? example: white gene for Drosophila eye color P: red female x white male P: white female x red male F1: red females and red males F1: red females and white males F2: F2: 3. Identifying in which parent and when a nondisjunction occurred: Nondisjunction in meiosis I: Nondisjunction in meiosis II: Continuing the example: P: white female x red male F1: 0.05% red daughters and white sons these daughters are XXY these sons are XO Did nondisjunction occur in the father or mother? Did nondisjunction occur in meiosis I or meiosis II?...
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