If your mother and father both are healthy but carry the allele for cystic fibrosis, which is caused by a recessive allele,

the odds of you inheriting at least one allele for the disorder are ____.



a. 1/4
b. 1/2
c. 3/4
d. 1
e. 0


ANSWER: c

Biology & Microbiology

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An enzyme that has been isolated from retroviruses and is used to generate cDNA is 

A. transverse ligase. B. reverse transcriptase. C. reverse endonuclease. D. recombinant RNase. E. RNA polymerase.  

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Mycolic acids are exclusively present in Mycobacterium spp. and can be distinguished by a(n) ________ staining procedure (which is, therefore, a diagnostic utility to identify mycobacteria)

A) acid-fast B) DAPI C) Gram D) lipo

Biology & Microbiology

A trait shows ____ if the phenotype of that trait is present in less than 100% of those with the related genotype

a. autosomal recessive inheritance b. autosomal dominant inheritance c. incomplete dominance d. incomplete penetrance e. incomplete expressivity

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What is the sugar molecule found in DNA?

a. ribose b. phosphatase c. deoxyribose d. oxyribose e. polymerase

Biology & Microbiology