JEngFinal

JEngFinal - In the following problems, please indicate the...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
In the following problems, please indicate the type of mutation the statement describes: 1. (4pts) An individual cell homozygous for a mutant allele of the gene for phenylalanine hydroxylase contains no detectable activity for that enzyme. ________________________ 2. (4pts) If the cell homozygous for a different mutant allele of the same gene contains ~20% of the enzyme activity. _________________________ 3. (4pts) A mutation that occurred in a plant petal. _________________________ 4. (4pts) Site-directed mutagenesis is used to change a codon from AAA (lysine) to AGA (arginine) in a gene encoding DNA gyrase, but the phenotype is still wild type. _________________________ 5. (4pts) A prototrophic yeast strain is obtained after mutational treatment of an auxotroph. The prototroph is crossed to a wild-type strain. Some progeny were auxotrophic. The change to prototrophy was caused by a ________________________ 6. (4pts) A mutation results in an abnormally short protein. _______________________ 7. (4pts) A heterozygous mutation in a ribosomal protein results in tetracycline resistance. _________________________
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
8. (4pts) Explain the difference between enhancers/silencers and activators/repressors in the regulation of gene expression (No more than 2 sentences please). 9. (10pts) In what parent, and in what meiotic division could the nondisjunction causing an XYY individual have happened? a. (2pts) Parent b. (8pts) Meiotic division- please draw the chromosomes undergoing meiosis I and meiosis II, the final gametes (6pts) and state which meiotic division the nondisjunction occurred at (2pts).
Background image of page 2
10. (10pts) Name two DNA repair pathways and indicate what perturbation of the
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/10/2010 for the course BIO NPB taught by Professor Furlow during the Spring '10 term at UC Davis.

Page1 / 9

JEngFinal - In the following problems, please indicate the...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online