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tag chromosomes ecology evolution

A C-fern (Ceratopteris richardii) growing in a pot
Genome Spotlight: C-fern (Ceratopteris richardii)
Christie Wilcox, PhD | Sep 22, 2022 | 5 min read
Sequences for the model organism and two of its kin reveal how these plants got their oversized genomes.
An Edith’s checkerspot butterfly
Genome Spotlight: Edith’s Checkerspot Butterfly (Euphydryas editha)
Christie Wilcox, PhD | Aug 25, 2022 | 3 min read
A high-quality genome sequence for this versatile insect will likely aid eco-evolutionary research.
a black abalone on a rock
Genome Spotlight: Black Abalone (Haliotis cracherodii)
Christie Wilcox, PhD | Jun 23, 2022 | 3 min read
The researchers who constructed the first reference genome for this critically endangered mollusk say it will assist restoration efforts.
illustration of a mitochondrian inside a cell
Could Dad’s Mitochondrial DNA Benefit Hybrids?
Alejandra Manjarrez, PhD | Jan 20, 2022 | 7 min read
Studies have found that organisms can inherit mitochondria from male parents in rare instances, and both theoretical and experimental work hint that this biparental inheritance is more than just a fluke.
"Big Cross" Lands Sticklebacks in the Spotlight
David Secko | Nov 7, 2004 | 5 min read
Marine threespine sticklebacks haven't morphologically changed in an estimated 10 million years, but their freshwater offshoots show no signs of slowing down. These 5-cm-long, freshwater fish have undergone a recent evolutionary change, variably losing their calcified body armor and retractable pelvic and dorsal spines. Remarkably, isolated marine and freshwater sticklebacks can be hybridized in the laboratory, a fact that is allowing researchers to analyze the genetics behind their natural dive
Surpassing the Law of Averages
Jeffrey M. Perkel | Sep 1, 2009 | 7 min read
By Jeffrey M. Perkel Surpassing the Law of Averages How to expose the behaviors of genes, RNA, proteins, and metabolites in single cells. By necessity or convenience, almost everything we know about biochemistry and molecular biology derives from bulk behavior: From gene regulation to Michaelis-Menten kinetics, we understand biology in terms of what the “average” cell in a population does. But, as Jonathan Weissman of the University of Califo
Genetic Parasites and a Whole Lot More
Barry Palevitz | Oct 15, 2000 | 10+ min read
Photo: Ori Fragman, Hebrew University Hordeum spontaneum, the plant studied for BARE-1 retroelements. With genome sequences arriving almost as regularly as the morning paper, the public's attention is focused on genes--new genes to protect crops against pests; rogue genes that make bacteria resistant to antibiotics; faulty genes that, if fixed, could cure diseases such as muscular dystrophy. What many people don't realize is that genes account for only part of an organism's DNA, and in many c
Pufferfish Genomes Probe Human Genes
Ricki Lewis | Mar 17, 2002 | 7 min read
It may be humbling to think that humans have much in common with pufferfish, but at the genome level, the two are practically kissing cousins. "In terms of gene complement, we are at least 90% similar—probably higher. There are big differences in gene expression levels and alternate transcripts, but if you're talking about diversity, number and types of proteins, then it's pretty difficult to tell us apart," says Greg Elgar, group leader of the Fugu genome project at the Medical Research C
Articles Alert
The Scientist Staff | Jun 12, 1988 | 7 min read
The Scientist has asked a group of expert. to periodically comment upon recent articles that they have found noteworthy. Their selectIons, presented here in every issue, are neither endorsements of content nor the result of systematic searching. Rather they are personal choices of articles they believe the scientific community as a whole may also find i.nteresting. Reprints of any articles cited here may be ordered through The Genuine Article, 8501 Market St., Philadelphia, Pa. 19004. BY SOK
Biochemical, Reagents Kits Offer Scientists Good Return On Investment
Holly Ahern | Jul 23, 1995 | 8 min read
Investment Author:Holly Ahern If you were to ask several life scientists to name a particular biochemical product that they simply could not do without, you'd probably get a myriad of answers that would mirror the research interests of the group you questioned. A molecular evolutionist trying to differentiate two closely related species of monkeys by restriction fragment-length polymorphism (RFLP) analysis might cite restriction enzymes, which can cut DNA into pieces of varying length. A cell b

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