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Thursday, Apr 3 rd , 2014

Did you know… The human brain is 80% water. If you shrunk a car to the size of a cockroach, the roach could outrun the car. Cockroaches can run ~200 scale mph. Thursday, Apr 3 rd , 2014. Are our traits determine by nature or nurture or both? Explain why you think that.

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Thursday, Apr 3 rd , 2014

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  1. Did you know… The human brain is 80% water. If you shrunk a car to the size of a cockroach, the roach could outrun the car. Cockroaches can run ~200 scale mph. Thursday, Apr 3rd, 2014

  2. Are our traits determine by nature or nurture or both? Explain why you think that. Why do gamete cells have haploid number of chromosomes, instead of a diploid number? Curly hair (H) has incomplete dominance over straight hair (h). A wavy haired mom is crossed w/ a straight haired dad. Draw a Punnett Square & give the genotypes & phenotypes. Do Now: Apr 3rd

  3. Change in DNA sequence • Causes: • DNA Damage • UV light (sunlight), radiation, or chemicals • Mistakes during DNA replication/copying • Mutations in gametes only are inheritable mutation

  4. Original Strand: • ACG TGG CAA AGC • Deletion: base(s) deleted from sequence • ACG TGG AAA GC • Inversion: section of bases flipped and re-inserted • ACG GGT CAA AGC • Duplication: base(s) repeated • ACG ACG TTG CAA AGC mutation

  5. Insertions: base(s) inserted into sequence • ACG TGG CAA TAG C • Translocation: bases swapped between 2 chromosomes • ACG TGG CAA AGC  ACG TGG TTT AGC • GCA GGT TTT AGC  GCA GGT CAA AGC Mutation

  6. Recessive metabolic genetic disorder • Mutation in gene for enzyme that metabolizes amino acid phenylalanine (Phe) •  Treatment: special diet low in Phe • Eliminate meats, dairy, & starches Phenylketonuria (PKU)

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