2,441 results
2,441 results for: mutations
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19191
I was shocked to read that now we need to be concerned not only with genetically modified organisms that we can see, but code-transgressing organisms that are invisible. Altering Escherichia coli in this way seems very dangerous. E. coli is found in every human intestine and has a proven ability to swap genetic material with […]
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19163
Why has so much focus been placed on protecting us against the threat of a smallpox outbreak when a terrorist could choose to release a different infectious disease? Wouldn’t it be wiser to discuss ways to respond to and contain any unknown disease? More public awareness of this possibility would prevent the false sense of […]
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Hormone dulls a tongue’s taste for sweets
The hormone leptin may suppress the tongue's ability to taste sugary substances.
- Humans
Science News of the Year 2000
A review of important scientific achievements reported in Science News during the year 2000.
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19184
In this article, I was surprised to read that chimeras harboring a mutation are not medically useful. Consider the value of cytokine-receptor mutations in humans, with respect to HIV. It’s likely that introducing some genetic mutations can inhibit viruses or bacteria in a host. Freda Wasserstein Robbins New Jersey City University Jersey City, N.J.
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Letting the Dog Genome Out: Poodle DNA compared with that of mice, people
Biologists have deciphered the DNA sequence of a poodle, an accomplishment that may help researchers study more than 300 human diseases that also affect dogs.
- Health & Medicine
Heart risks linked to infertility syndrome
Women with polycystic ovaries—commonly linked to infertility—are more likely than women without the disease to show early signs of heart disease.
- Math
Computation’s New Leaf
Plants in which large numbers of simple units interact with one another appear to compute how to coordinate the actions of their cells effectively.
- Health & Medicine
Damage Patrol: Enzyme may reveal cancer susceptibility
People with lung cancer show less DNA-repair activity by a certain enzyme than people without the disease do.
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Out of China: SARS virus’ genome hints at independent evolution
The newly identified SARS virus is the product of a long and private evolutionary history, clues from its genome suggest.
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19131
I was intrigued by the fact that some apoptotic cells can recover if not engulfed by another cell. DNA reassembly after the caspases tear it apart should result in many gene mutations. While most of the mutations would result in cell death, perhaps a few cells would have mutations that promote a cancerous or precancerous […]
- Animals
Retaking Flight: Some insects that didn’t use it didn’t lose it
Stick insects may have done what biologists once thought was impossible: lose something as complicated as a wing in the course of evolution but recover it millions of years later.
