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Microevolution is defined as a change in allelefrequencies in a population over generations. Please explain whatan allele is, in genetic terms. Name the three major factorsinvolved in allele frequency changes in populations. Describe, indetail, how natural selection works on individuals, while evolutionoccurs in populations. Include a real or hypothetical example ofthe process of natural selection in your answer other thaninsects and insecticide!Identify the specific natural selection pressure and the specifictrait being selected for in your example.
A patient has blood with a pH of 7.35. Predict the direction of PCO2, for a condition which is consistent with respiratory acidosis. What compensation acts to restore pH to near the value of pH 7.4?
A 23 year old medical student has mixed venous oxygen and carbon dioxide tensions of 40 mmHg and 45 mmHg, respectively. A group of alveoli are not ventilated in this student because mucus blocks a local airway.
The use of PCR and genetic approaches in biotechnology
How will chronic Hepatitis C impact a female's reproductive system? Discuss sex hormone levels, hypothalamic-pituitary axis changes, fertility and menstruation changes.
Imagine you are an astronaut in a spaceship. Two identical but unlabeled boxes are floating near you. You know that one is filled with sand and the other with feathers. Without opening the boxes, how can you figure out which box contains which mat..
For many of the mammalian Hox genes, it has been possible to determine that some of them are more similar to one of the insect HOM-C genes than to the others. Describe an experimental approach using the tools of molecular biology that would allow ..
A nutrient agar plate labeled 10^-5mL had 154 colonies after incubation. what was the cell density in the original sample? what volume was used to inoculate this plate?
Draw a diagram that represents the molecular structure of a phospholipid. Be sure to show any part of the molecule that might be charged. Describe 2 ways in which the molecular structures of phospholipids and triglycerides are similar, and two ways ..
Discuss and explain a parallel arrangement of the circulatory system and why is it functionally important?
Describe the growth of a highly branched, large oak tree from an embryo within an acorn.
What are the primary differences between animal cells, plant cells, and bacteria cells? What chacteristics do they share.
Tay-Sachs disease is inherited as an autosomal recessive. It is a devastating neurological disease that results from the lack of a normal enzyme, hexosaminidase A, whose job is to metabolize lipids (gangliosides) that are found in brain cells.
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