Homework and Assignments

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Sample homework

How Can a Mutation in DNA Affect an Organism?

Sometimes the DNA code that makes up a gene has an error in it. This error is called a mutation. When the DNA contains an error, the mRNA it makes will copy the error. When the mRNA contains an error, it will code for incorrect tRNAs and produce an incorrectprotein.

Sicke-cell anemia is a disorder that gets its name from the sickle shape of the red blood cells. The sickled red blood cells are caused by a mutation in the hemoglobin of the person with the disorder. Hemoglobin is the main protein in red blood cells. Each hemoglobin molecule carries oxygenfrom the lungs to all other parts of the body.

Human Traits
controlled by
? mutiple alleles ? sex-linked
such as
widow's peak ? height ?

Define the following words

gene_________________________________________

hemoglobin________________________________________________

mutation_______________________________________

sickle-cell anemia_________________________________________

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