Which of the following three-letter symbols represents an amino acid that is polar and uncharged?

A) pro
B) gln
C) ala
D) asp
E) his


B) gln

Biology & Microbiology

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Using the table, into which group would you classify a virus with single-stranded DNA capable of converting to double-stranded before transcription takes place?


a. Group VI
b. Group III
c. Group II
d. Group V

Biology & Microbiology

Fragile X syndrome is caused by expansion of a trinucleotide repeat in the 5? UTR of the FMR-1 gene. What is the simplest way to detect this expansion?

A) PCR using genomic DNA as template and two primers that are complementary to repeats on either side of the expansion, followed by gel electrophoresis B) PCR using genomic DNA as template and two primers, one complementary to the repeat region and the other complementary to unique sequence, followed by gel electrophoresis C) PCR using two primers that are complementary to unique sequences on either side of the repeat region, followed by sequencing the PCR products D) Direct exome sequencing using a microarray E) Whole-genome sequencing

Biology & Microbiology

The chromosomes are moving to opposite

sides of the cell during

a. anaphase. b. metaphase. c. interphase. d. prophase. e. telophase

Biology & Microbiology

In alternation of generations, a haploid gametophyte goes through mitosis to form a gamete.

A. haploid . B. sporo- C. tetraploid D. diploid E. micro-

Biology & Microbiology