Gametes with extra or missing chromosomes are the result of
a. fertilization.
b. recombination.
c. nondisjunction.
d. independent assortment.
Answer: c. nondisjunction.
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Eukaryotic pre-mRNA molecules are modified
A. in the cytoplasm. B. at the ribosome. C. inside the nucleus. D. as they pass through the nuclear membrane. E. at the transcription bubble.
Certain drugs use RNA interference as a mechanism of action. What molecule would the active compounds of these drugs be composed of?
A. Carbohydrate B. Steroid C. Protein D. Nucleic acid E. Small ion
Cells that de-differentiate, lose cell cycle control, and lose their attachment to the surrounding cells, are known as ________.
What will be an ideal response?
Common alleles of genes other than BRCA1 ____
a. dictate the types of mutations that occur in BRCA2 b. cause uncontrolled division of the BRCA2 gene c. cause the interruption of the cell cycle in any cell containing a BRCA2 mutation d. have a strong influence on whether a carrier will develop breast cancer e. have very little influence on whether a carrier will develop breast cancer