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Why are mutation and recombination important in the process of natural selection and the evolution of organisms?
A diploid heterozygous cell with the genotype Bb undergoes meiosis and no crossing over occurs.
What are the consequences of having pyrimidine dimers in DNA.
The cell walls if bacteria, fungi and plant cells and an extracellular matrix of animal cells are all external to the plasma membrane. Which is the characteristic of all these extracellular structures.
Contrast the epithelium of esophagus with that of the stomach. Explain why is each epithelial type best suited to the function of its respective organ?
Populations evolve for many reasons. Assume there is a population of plants that have either purple flowers or white flowers, and allele for purple flowers is dominant.
Mark all key innovation of Spermatophyta over their ancestors (synapomophy).
In a theoretical operon, the genes A, B, C, and D represent a repressor gene, a promoter sequence, an operator, and the structural gene but not necessarily in that order.
Hereditary fructose interolance is a rare recessive disorder that is caused through a mutation in the aldolase B gene. As a result of this disorder individuals may have all of the following symptoms except:
Suppose two helical turns of a supercoiled DNA molecule changes from a B conformation to the Z conformation. Calculate the approximate change in linking number, writhing number and twist.
Describe the characteristics of midlatitude cyclones and anticyclones in the Northern and Southern Hemispheres. Include weather characteristics, pressure patterns (high or low) and wind patterns (converging or divergent; clockwise or counterclockw..
The value of neutrons and protons a molecule have determine a molecules "Molecular Weight". An important part of working a laboratory involves making molar solutions.
Four proteins, each having a single polypeptide, are separated by SDS-PAGE: human cytochrome c , human serum albumin, bovine myoglobin.
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