Suppose D Were Dominant and D Were Recessive,and You Could

question 59

Multiple Choice

Suppose D were dominant and d were recessive,and you could label the D allele in the P generation with a radioactive substance that could be inherited over several generations.You create hybrids by mating your radioactive DD individuals to dd individuals.Finally,you cross two F1 individuals (with the Dd genotype) .In 1,000 offspring,how many would you predict would be radioactive?

• A) 250
• B) 500
• C) 750
• D) 1,000

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Definitions:

Tomography

Imaging by sections or sectioning, using any kind of penetrating wave, to create a three-dimensional image of the inside of an object.

Myelogram

A radiographic examination of the spinal canal and nerve roots by injecting contrast dye to detect abnormalities or injuries.

Sialography

A diagnostic imaging technique that uses a radiopaque dye to visualize and evaluate the salivary glands and ducts.

Intravenous Pyelogram

A radiographic procedure used to visualize the kidneys, ureters, and urinary bladder using a contrast medium injected intravenously.