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A. Why is homologous recombination between nonsister chromatids preferred?
B.Is it possible to tell whether a DNA gap was generated during a homologous recombination eent that occurs at a heterozygous locus? Why or why not?
C. Based on its structure, explain how the synaptonemal complex could actually represent an obstacle to recombination.
D. Why is it important that resolvases function as symmetrical molecules with two active sites?
E. Explain why either a single- or double-strand break can result in a change in supercoiling.
F. The Cre/lox system is used to extensively to create "conditional knockouts" in mice, for example to delete a gene of interest in a particular tissue type. Describe how such a system might work.
List in order the higher taxons used in classification (domain, kingdom, phylum, genus, species) List the 3 domains and how they differ. Describe uses and effects of microbes for man.
If the horticulturist breeding gardenias succeeds in having a single plant with a particularly advantageous set of traits, which would be her most probable and efficient route to establishing a line of such plants.
Choose one biotechnology example, such as agriculture, medical or historical, and provide at least two ways use of this biotechnology could benefit society and two ways this biotechnology could be harmful.
If a man with a red-colorblindness (a sex-linked trait) marries a normal woman, would you expect to see trait expressed in their children.
Drosophilafemales homozygous for the third chromosomal genes pink-eye and ebony body were crossed with males homozygous for 2nd chromosomal gene apterous wings.
What is the major component of cell walls in bacteria? How does this differ from plants? What are two sugar components and 3 amino acid components.
Vitamin B1 has to be taken in through the diet of the individual. At what phase will cellular respiration halt without B1.
Estimate the potential problems with a plant effluent that contains a pesticide with an LC50 for fish of 0.01 mg/L at concentrations exceeding 0.01 mg/L.
The breakdown of complex glycogen molecules into simple glucose molecules is most accurately described as a anabolic reaction.
What phenotypic results would occur in a cross between a member of an mt+ strain resistant in both genes and a member of a strain sensitive to the antibiotic? What results would occur in the reciprocal cross?
Male songbirds sing in spring because increasing daylength at this time stimulates testosterone production which spurs growth of song control circuits in the brains of male songbirds. Choose the best level of causation addressed by this explanatio..
Prions are causative agents of progressive neurodegenerative disorders that affect both humans and animals. Like viruses, prions are acellular,
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