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A scientist is studying a species of gopher found in North America. Population X lives in an area with hard packed soil, Population Y lives in an area with loose soil, and Population Z lives in an area with both hard and loose soil. The gophers use their claws to dig through the soil and make burrows (homes). There is variation in the claw structure of gophers, and claw structure is a heritable trait. Based on this information, which of the following statement correctly pairs the likely effect of natural selection on the phenotype distribution in each population?
Describe the difference between the ionic and covalent bonds. Describe the functions of the three specialized tissues in plants.
On the coding strand above, indicate where you would expect FRP to bind to the DNA. In one sentence, describe why the decision makes sense.
DNA template sequence of a gene encoding mRNA in E.coli determine the total charge of the protein?
Energy is stored in different forms in the body. ATP is very unstable and is put to use very quickly in cells. Other storage molecules last longer.
Plasmid size of pGLO is 5371 bp and the restriction sites for Pst I are 2106 and 3181. Compute to predict the sizes of fragments when gPLO is digested with PstI.
Illustrate the environmental conditions that would favour sexual reproduction over asexual reproduction in Hydra. What is the possible evolutionary reason for having two different reproductive strategies.
Prepare 150 microliter of 1X buffer using only water and stock 10X buffer. What volumes of each do you use and change 500 mM EDTA to molarity.
The mean value of a trait is 250 units and the h2 for the trait is .50. A male and female measuring 240 and 280 units respectively are selected for breeding and they produce several offspring. Find expected value for the trait among their offspring.
Describe at least four functional (not structural) similarities between the purple bacterial photosynthetic reaction center (P860), and the PSI reaction center of green plants.
Explain why do human beings play a unique role both in degradation and the preservation of the biosphere and discuss the importance of the greenhouse effect.
Huntington disease is an autosomal dominant trait that causes neurodegeneration later in life. Matt, who is too young to show the phenotype of Huntington disease,
A biochemist isolates a peptide hormone with the given sequence, Indicte the residues that could contribute a positive charge.
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