100+ Chromosome 21 trisomy 21 PowerPoint (PPT) Presentations, Chromosome 21 trisomy 21 PPTs

Chromosome 21 trisomy 21 - PowerPoint PPT Presentation

February 23, 2009

February 23, 2009. Objective : Discuss the effects of nondisjunction Drill: What is crossing over? What phase of meiosis does it occur?. Nondisjunction. Review: What is a mutation?. Mutation: A change in the nucleotide sequence of DNA A single nucleotide change can have serious effects.

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290 views • 15 slides

Nondisjunction

Nondisjunction. Objective : Discuss the effects of nondisjunction Answer: What is crossing over? What phase of meiosis does it occur?. Review: What is a mutation?. Mutation: A change in the nucleotide sequence of DNA A single nucleotide change can have serious effects.

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203 views • 15 slides

Important announcement

Important announcement. Another quiz for extra credit will be held on 9/20. There will be no exam on 9/22; rather there will be a regular class session. Most of the quizzes for extra credit will be pop-ups, so please get your own scantrons and pencils everyday to class.

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207 views • 11 slides

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Chromosome 21 trisomy 21 - PowerPoint PPT Presentation

February 23, 2009

Nondisjunction

Important announcement