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Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype Number wild-type 67 ebony 8 ebony, scarlet 68 ebony, spineless 347 ebony, scarlet, spineless 78 scarlet 368 scarlet, spineless 10 spineless 54
(a) What indicates that the genes are linked? (b) What was the genotype of the original heterozygous females? (c) What is the order of the genes? (d) What is the map distance between e and st? (e) Between e and ss? (f) What is the coefficient of coincidence? (g) Diagram the crosses in this experiment.
Molly requires to make one liter of a 1.5 M glucose solution for use in an experiment. The molar mass of glucose is 180.16 g/mol.
A horse has a diploid complement of 64 chromosomes including 36 acrocentric chromosomes. The donkey has 62 chromosomes including 22 acrocentric chromosomes.
A population of mice can have either black (B) or white (b) fur and long (L) or short (l) tails. Suppose if this is the gamete pool for the parental generation, what is the expected frequency of B/l:b/l zygotes in the next generation,
Which of the following statements about DNA replication is true? Okazaki fragments are DNA fragments synthesized on the leading strand. Single?strand binding proteins stabilize the open conformation of the unwound DNA.
While the nurse applies the sharp point of the pin on his arm several times, he is only able to identify these as one "very sharp prick." What would be the most correct explanation for this.
Create a diagram of the explanation in the paragraph. I recommend that you attempt each problem on your own, then meet with your classmates to discuss possible answers.
The procedure of beta oxidation and fatty acid synthesis are regulated in such a manner that neither process is active at the same time.
You want to find the gene that codes for bacteriocin, and map it on the bacterial chromosome?
Which person would tend to have a higher proportion of slow-twitch than fast-twitch muscles: a weight lifter, a sprinter, or a long distance runner?
Assume you have identified a mutant E. coli strain that cannot synthesize histidine. To determine the location of the his- mutation on the E. coli chromosome.
The energies of glycolysis shows that there is a large drop in free energy upon oxidation of glycerladehydes 3-phosphate to 1,3-bisphosphoglycerate. In the presence of oxygen, some of this energy is ultimately converted into ATP production. though..
plan the structure of butanol and show water molecules in hydrogen bonds to the butanol. How many should there be? remember the H bonding rules.
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