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Methods of Genetic Study

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Questions and Answers

What does karyotyping involve?

Analysis of chromosome composition (correct)

Establishing new species

Detecting chromosomal aberrations

Creating a karyogram

What does a karyogram represent?

Genetic mutations

Concordance between twins

Environmental influences

Chromosome of an organism (correct)

In a twin study, what does concordant mean?

One possesses the trait while the other does not

Both possess or are free of a particular trait (correct)

They have the same intelligence level

Both have different DNA

What is the significance of high concordance among identical twins reared apart?

Greater role of genes than environment Signup and view all the answers

What does dizygotic twin mean?

Different DNA and reared in the same environment Signup and view all the answers

In monozygotic twins, what determines if intelligence is due to genetics or environment?

If intelligence is different, it must be due to genetics Signup and view all the answers

What is the advantage of using fruit fly or mice as experimental animals over humans?

They have a shorter generation time. Signup and view all the answers

Why is it important for test organisms to have a large number of offspring?

To make the statistical analysis more accurate. Signup and view all the answers

What is a key factor in choosing a test organism for genetic analysis?

Having many variations. Signup and view all the answers

Why are bacteria, fungi, and unicellular organisms useful in genetic studies?

They have a large number of offspring. Signup and view all the answers

In genetic studies, what facilitates the acquisition of results from mating?

A short generation time. Signup and view all the answers

Why is controlled mating important in experimental breeding?

To allow for mate selection. Signup and view all the answers