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Question 3. You are a clinician in a small hospital and are monitoring the progression of myclonic epilepsy (MERRF) in twin boys. One twin remains only mildly affected by the condition, but the other twin develops other symptoms of full blown MERRF, including deafness, ragged red muscle fibers, and ataxia (loss of ability to control muscles). Use a diagram that includes chromosomes, genes, alleles to explain the phenotypic dissimilarity in these identical twins. In respect to MERRF what is the genotype of the mother?Question 5. In the following question we are dealing with a diploid organism. You have justisolated a new embryonic lethal mutation (a single mutation in one gene) that is a little peculiarbecause three distinct phenotypes have been associated with this mutation:Phenotype 1: viable, minor anterior deformity.Phenotype 2: more severe than above, anterior defect and is embryonic lethal.Phenotype 3: like phenotype 2 it is an embryonic lethal, but halts development even earlier.They appear in the following crosses:Cross 1: male +/- x female +/- : 1/4 phenotype #1; 3/4 normalCross 2: male +/- x female -/- : 1/2 phenotype #2; 1/2 phenotype #3Cross 3: male -/- x female +/- : 1/2 phenotype #1; 1/2 normalCross 4: male -/- x female -/- : all display phenotype #3a) Explain the difference between phenotype #1 and phenotype #2. Which phenotype represents the maternal effect phase, the zygotic phase and why?b) Why does this gene have both a maternal and a zygotic phase? How does phenotype #3 arise?
In our population there are 300 red sea stars, 200 pink sea stars and 500 White Sea stars. How numerous total alleles for sea star colour are in this population.
You are the owner of a company that sells cleaning products. The people in Research have two new products for you to review. The first is a kind of hand soap that they say will cut greasebecause "it is made from a lipidand like dissolves like."comp..
The symptom of numbness of the palmar region often associated with carpal tunnel syndrome is caused by: Compression of the long extensor muscles of the hand. Compartmentalization of flexor and extensor muscles.
A plasmid digest with BamHI produced 2 kb and 4 kb fragments. Digest of a plasmid with HindIII produced 6 kb fragment. Double digest with both enzymes produced 1 kb, 2 kb and 3 kb fragments. Sketch a plasmid map.
Metric Conversions using Dimensional Analysis the key to using dimensional analysis is the right use of conversion factors what is a conversion factor.
Trypanosomses are not so young and widespread protozoa that humans have encountered for many years. Upon infection with T. brucei brucei, the organism is cleared.
Assume that there are 63 different naturally occurring amino acids. If all 64 possible combinations of bases for a codon resulted in coding for 63 different amino acids and one stop codon, which of the next mutations would NOT be possible.
Compare and contrast prokaryotic and eukaryotic cells. If shape and colour of radishes are both due to genes with partly dominant alleles, crossing two dihybrid heterozygotes will produce how many different phenotypes.
Which of the follow is NOT a function of meiosis. Generation of genetic diversity by crossing over.
You have two enzymes, 1 and 2. Both convert substance A into substance B. 1 is inhibited by B, because B partially blocks the active site and will not permit more A to enter.
What is the difference between molecular motion and diffusion?is it extremely small to demonstrate brownian movement.
A botanist takes a sample of 300 plants from a population and determines the genotype of each one for an esterase locus. The locus has two alleles segregating in the population
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