Assuming that a particular disorder is caused by an allele of a single gene, what feature of a pedigree would allow one to conclude that the disorder was caused by a dominant allele?
a) two unaffected parents have an unaffected child
b) two unaffected parents have an affected child
c) an affected mother only has affected sons
d) two affected parents have an unaffected child
e) all of the descendants of a particular affected person are also affected
Answer: a) two unaffected parents have an unaffected child
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The binding of TFIID is followed by the binding of a number of other general transcription factors. The correct order of binding of these factors would be
A. TFIIA, TFIIB, TFIIE, TFIIF, TFIIH B. TFIIB-TFIIA, TFIIF, TFIIE, TFIIH, TFIIJ C. TFIIF-TFIIH, TFIIB, TFIIE, TFIIA, TFIIH D. TFIIE, TFIIB, TFIIA, TFIIH, TFIIF
Bacterial genetic diversity can arise from:
A. sexual reproduction. B. transduction and conjugation. C. meiotic recombination. D. meiotic recombination and conjugation. E. horizontal gene transfer and sexual reproduction.
The nucleotides within DNA are composed of a
A. phosphate group, ribose sugar, and nitrogenous base. B. sulfur group, ribose sugar, and nitrogenous base. C. phosphate group, deoxyribose sugar, and nitrogenous base. D. sulfur group, deoxyribose sugar, and nitrogenous base. E. phosphate group, hexose sugar, and nitrogenous base.
__________ can reveal the order of nucleotide bases in a fragment of DNA. Fill in the blank(s) with the appropriate word(s)