An individual cell homozygous for a mutant allele of the gene for a human enzyme contains no detectable activity for that enzyme. The mutation is best described as

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#Question id: 17668

#XL - S Microbiology

The most recent common ancestor of all land plants was probably similar to modern-day members of which group? 

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#Question id: 11122

#XL - S Microbiology

Phylogenetic hypotheses (such as those represented by phylogenetic trees) are strongest when

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#Question id: 32937

#XL - S Microbiology

A bacterial culture initially contains 1,000,000 (10⁶) CFU. After 6 minutes of heat treatment at 80°C, the bacterial count decreases to 1,000 (10³) CFU. Calculate the decimal reduction time (D-value) at 80°C.

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#Question id: 12915

#XL - S Microbiology

Which of the following statement is not correct about PCR.

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#Question id: 364

#XL - S Microbiology

 A solution contains 0.0000001 (10-7) moles of hydrogen ions [H+] per liter. Which of the following best describes this solution?