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A true-breeding black goose from Nova Scotia is crossed with true-breeding black goose from Japan, producing F1 offspring that are all gray. The F1s are intercrossed, producing F2s with the following phenotypes: 37 gray and 29 black. Other research has revealed that feather color is controlled by two genes in geese. What type of epistasis best fits this phenotypic ratio?
A) Dominant epistasis B)Duplicate recessive epistasis C)There is no epistasis in this cross. D)Recessive epistasis E)Duplicate dominant epistasis
The "Primordial soup" includes the mixture of elements and gases which are thought to have started life on the Earth. Specify where did the gases and elements come from?
ATP-synthase is a large membrane-integral protein complex that produces ATP from ADP and inorganic phosphate. Describe the location of this complex in the cell; list its major parts and the subunits each part is made of. Describe how it is able to co..
You are a scientist working on a large protein (500 amino acids long) you have genetically engineered the protein in in such a way as to replace a single hydrophobic amino acid with a negatively charged amino acid.give the difference between prima..
non covalent interactions which are most important. What is the driving force for proteins that are embedded in lipid membranes?
Explain the study of hypothesis? Specify the outcome variables and also state how they were measured? Explain the study factors (exposures) and how were they measured?
When a sperm cell comes into contact with an egg cell, there is a change in the electrical charge across plasma membrane and various channel proteins close. What are these channels known as.
If you obtain an RF value of 45 percent in one experiment, what can you say about linkage? (The actual figures are 58, 52, 47, and 43 out of 200 progeny)
An artificial cell containing 0.5 M glucose is placed in a beaker of 0.5 M NaCl. The membrane around the cell is permeable only to water.
A solution containing 80% cytosine and 20% uracil was used to create synthetic RNAs. A bacterial cell free system produced proteins using these mRNAs in the following proportions.
Zebrafish are increased in fish tanks with one family each tank. The mutation spadetail is a recessive lethal. A stock tank for spadetail was made by crossing two carriers.
Would you expect any differences in the sizes of the inserts in the two libraries? in brief explain.
Select a specific gene and a specific alteration. Explain the effects of the modifications and why it might contribute to the cancer.
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