Latest Breaking News On - மீன்வளம் அறிவியல் மையம் - Page 18 : comparemela.com
Sheila Stiles Jewell, a geneticist marine biologist, is seen at her home in Memphis, Tenn., Dec. 30, 2019. (CNS photo/Karen Pulfer Focht)
MEMPHIS, Tenn. (CNS) As a child, Sheila Stiles Jewell played outside of the public housing where her family lived in Memphis. She felt one with nature weaving clover and catching bumblebees, not realizing that she was really feeding her curiosity for science and the natural world.
During the days of segregation, the Catholic Church recruited her family, living at Lemoyne Owen Gardens at the time, to receive a Catholic education. It was a noble act that she credits with much of her success today.
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New DNA-based technique allows researchers to determine age of living beluga whales in Alaska
Researchers can now determine the age and sex of living beluga whales in Alaska’s Cook Inlet thanks to a new DNA-based technique that uses information from small samples of skin tissue.
Accurate age estimates are vital to conservation efforts for Cook Inlet belugas, which were listed as endangered following a significant population decline in the 1990s. Previously, researchers could only determine the age of beluga whales by studying the teeth of dead animals.
The new aging method uses DNA methylation data and machine learning to develop a model that captures the relationship between methylation and age. This relationship provides an epigenetic clock for beluga whales.
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