MOUSE SPERM STORED ON AN INDIAN SPACE STATION IN A FREEZE DRIED FORM The Japanese researchers behind the new work, which they published on June 11 in a news paper, wanted to know how space radiation affects fertility in mammals. As we know the radiation can damage the DNA within cells , causing mutations (this is why dermatologists recommend using sunscreen) & also Environments on Earth with heavy radiation exposure can cause defects in the offspring of animals. Japanese researchers found mouse sperm exposed to high levels of cosmic radiation for nearly six years produced a large brood of healthy, unremarkable "space pups." The sperm was stored in the International Space Station in freeze-dried form. [ To clear , What is cosmic radiation ? Cosmic radiation is an ionizing radiation produced when primary photons and α particles from outside the solar system interact with components of the earth's atmosphere. NSRL is one of the few facilities in the world follows high...
Scientists revealed the secrets of tiny creature. Eurasian Water shrew The use of DNA samples to construct an evolutionary tree, scientists discovered that diving behaviour developed five distinct instances on this group of insect- consuming mammals.. [ To clear.. What is evolutionary tree? (Like above) A phylogenetic tree (also phylogeny or evolutionary tree ) is a branching diagram or a tree showing the evolutionary relationships among various biological species or other entities based upon similarities and differences in their physical or genetic characteristics. About Water Shrew The Eurasian water shrew, known in the United Kingdom as the water shrew, is a relatively large shrew, up to 10 cm long, with a tail up to three-quarters as long again. It has short, dark fur & a few stiff hairs around the feet and tail.. ] The ability of ...