Genetics: DNA and Chromosome Problems
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1. Each cell of the human body contains 46 chromosomes.
a. How many DNA molecules does this statement represent?
b. How many different types of DNA molecules does it represent?
2. DNA is extracted from cells of Neurospora, a fungus that has one set of seven chromosomes; pea, a plant that has two sets of seven chromosomes; and housefly, an animal that has two sets of six chromosomes. If powerful electrophoresis is used to separate the DNA on a gel, how many bands will each of these three species produce?
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This solution helps with DNA and chromosome problems. Detailed solutions are given for each problem.
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1. Each cell of the human body contains 46 chromosomes.
a. How many DNA molecules does this statement represent?
b. How many different types of DNA molecules does it represent?
Response: Since there are 46 chromosomes in each cell, there are 46 DNA molecules in each cell. Each chromosome represents 1 VERY LONG DNA molecule. However, since each chromosome is present in ...
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