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strain of flies carrying the dominant eye mutation Lobe on the second chromosome was crossed with a strain homozygous for the second chromosome recessive mutations smooth abdomen and straw body. The F1 Lobe females were then backcrossed with homozygous smooth abdomen, straw body males and the following phenotypes were observed:
smooth abdomen, straw body 820Lobe 780smooth abdomen, Lobe 42straw body 58smooth abdomen 148Lobe, straw body 152
(a) Give the gene order and map units between these three loci - draw the map!.
(b) What is the coefficient of coincidence?
What are the primary mechanisms the body uses to absorb carbohydrates? (i.e., transport mechanisms)?
Which of the following would not be stimulated by neurons originating in the hypothalamus.
Imagine that you have engineered a set of genes, each encoding a protein with a pair of conflicting signal sequences that specify different compartments. If the genes were expressed in a cell, predict which signal would win out for the following c..
The wild type fruit fly, Drosophilia melanogaster, has straight wings and long bristles. Mutant strains have been isolated that have either curled wings or short bristles.
Suppose a membrane potential of -70mV, what are two reasons why the electrochemical gradient for Ca2+ ([10-7 mM] free in the cytoplasm
The DNA molecule is permitted to replicate in a solution containing all four unlabeled deoxyribonucleoside tripohosphates and deoxyadenosine triphospage that is labeled with 32P.
What is the most likely defect associated with the Ser63 deletion mutant. How would you design an experiment to test your hypothesis using culture cells and the expression construct of wild-type and Ser63 deletion mutant of P0.
Describe in detail how the ribosome uses an mRNA to accurately synthesize a protein in eukaryotic cells.
How does the high concentration of urea in the cells of the inner medulla surrounding the nephron make it possible for the fluid in the tubule to become concentrated (loose water)?
A can of Mountain Dew soda contains 46 g of sugar. Assume that your body completely digests this sugar, 170 kcal of heat energy is available from the sugar. Around how many grams of water will you have to evaporate as sweat to lose this 170 kcal of e..
The physical process through which water and solute move through a membrane when hydrostatic pressure gradient exists across the membrane is the process of?
Explain homeostasis and briefly describe how each body system contributes to body-wide homeostasis. Finally, which two body systems contribute the most to homeostasis?
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