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


C) PCR using two primers that are complementary to unique sequences on either side of the repeat region, followed by sequencing the PCR products

Biology & Microbiology

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If a cell has 36 chromosomes at the beginning of G1, how many chromosomes will be present at the end of G2?

a. 36 b. 18 c. 72 d. 64 e. 44

Biology & Microbiology

Red tides are caused by

a. formaniferans. b. dinoflagellates. c. many different organisms from many different classification groups. d. sea weeds. e. ciliates.

Biology & Microbiology

The synthetic theory of evolution emphasizes:a

natural selection of individuals. b. population genetics. c. differential reproduction. d. overproduction of individuals. e. homologous versus vestigial structures.

Biology & Microbiology

Black bread mold is ____, which means that it is self-sterile

a. heterozygous b. heterothallic c. heterotrophic d. mycotoxic e. coenocytic

Biology & Microbiology