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Wild type Arabidopsis is a selfing diploid plant with 2n=10. You notice five different varieties with distinct phenotypes that involve leaves and fruit of abnormal size, shape and color. These mutations do not breed true and have odd segregation patterns.
A) Suggest a chromosomal basis for these mutations and explain why the segregation patterns are strange.
B) When Arabidopsis is crossed to a close relative Capsella(2n=10) a hybrid is created between them. How many chromosomes would the hybrid have? Explain your reasoning
C) Would the hybrid be sterile or fertile? Explain your reasoning.
Discuss why is it important to target liposomes to a particular cell type that is, why not have them bind to any cell type?
a scientist isolates two specific mRNAs. one codes for the enzyme fowlase, an enzyme that is involved in digestion in chickadees; the other codes for the quail enzyme quailase that is involved in cellular carb metabolism.
Briefly explain the Human Genome in terms of PURPOSE, number of genes,and chromosome pairs. (please make this simple)
Think about the sequence 3'-T-C-T-C-T-A-C-G-T-5' and calculate the total number of covalent bonds joining the nucleotides in each strand?
Identify the problem with this statement: PCR-based systems often yield results for a tiny sample of relatively poor-quality DNA?
The product of the complete hydrolysis contained 2.2 mg of the compound shown below, and no other 2,4-dinitrophenyl derivatives of the ?-amino groups of other amino acids could be found. How many polypeptide chains are in the protein?
How are estuaries different from freshwater and marine ecosystems? Name at least two ways.
Choose the correct definition of metalloprotein. 1. a carrier protein that allows metal ions to diffuse across a cell membrane 2. a co-factor regulating enzyme activity 3. a protein whose function depends on the presence of a specific metal.
Use diagrams and words to describe how restriction endonucleases and ligase are used to obtain a desired piece of foreign DNA and insert it into plasmid.
With regard to the 5' - 3' orientation of the nontranscribed DNA strand, is the order of the genes AB or BA?
Semisolid media such as MIO are used to determine motility. Another such medium is SIM (sulfide, indole, motility) medium. When would you use SIM instead of MIO?
Explain why the "two-hit hypothesis" only applies to mutations in tumor suppressor genes and not to mutations in proto-oncogenes.
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