Human development is based on an adjustable timeline that is different for each being. One child might take their first steps at age 2, while the other at age 3. Both are completely normal. Pregnancy, on the other hand, is stricter with time, as an early delivery can result in many developmental issues for the child. Until recently, science has not succeeded at efficiently tracking a woman’s immune function during pregnancy, even though it is the immune system that allows prediction of risks, such as preterm labor.
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The overall purpose of breeding to create a see-through frog was done in order to benefit students, and the organisms themselves. Often, frogs are used for visual labs in schools, colleges, etc. Therefore scientists wanted to create a frog that could be used as a model without being dissected in order to observe its organs, blood vessels, and structure. By breeding two recessive colored frogs by artificial insemination, F2 generation offsprings of the Rapa Japonica frog, created an entirely translucent variation of the species.
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