Using arrays to screen embryos during an in vitro fertilization cycle can improve pregnancy rates, according to a new study.

Pacific Reproductive Center, a Torrance, Calif.-based IVF clinic, blindly randomized 103 IVF cycles. In a treatment group of 55 cycles, the center used BlueGnome 24sure comparative genomic hybridization arrays to screen day-5 biopsies for aneuploid chromosomes prior to implantation of a single euploid embryo, while in a control group of 48 cycles, single embryos were selected using existing morphological scorecard approaches.

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Researchers report that deleting one gene from butterflies affects their wing coloration patterns, according to the Washington Post.

The Seattle Times writes that pharmacogenomics testing can help choose medications that may work best for people with depression.

In PNAS this week: genome sequencing of weevil symbionts, retinoid X receptor deletion in lung cancer metastasis, and more.

Sequencing could help combat foodborne illnesses, according to a blog post by Food and Drug Administration officials.