This first stage produces simple molecules, which can then recombine to make more complex molecules if this astonishing experiment is successful. What we're going to do now is warm the system a little to see what the ice does.第一步产生简单的分子，如果这个惊人的实验成功的话，这些简单的分子就...
species物种conceptbiological生物populations 1 What is a Species? • The smallest evolutionarily independent unit Evolutionary independence occurs when mutation, selection, gene flow, and drift operate on populations separately. Species form a boundary to the spread of alleles (gene flow). I. Biologica...
not tissue- or cell-specific, this approach may not be sufficient to determine the specific tissue in which the expression is detected [7]. To overcome these challenges, the ideal solution is the isolation of specific tissues. In the case of secondary growth, it is possible to manually separa...
第2课 What is biology-2 深圳高级中学 L/O/G/O TheMethodsofBiology ScientificMethods ScientificMethods ObservationQuestion areasonableanswertothequestion Hypothesis resultdoesnotagreewithhypothesis Experiment resultagreeswithhypothesisvalid invalid Conclusion ScientificMethods Experiment实验 实验设计使用工具安全保证...
Spread of the coronavirus has exposed troubling problems at fur farms and how we respond to outbreaks there.
Eating disorders affect people of all ages, races, and genders. Risk factors for eating disorders include a range ofpsychological, biological and environmental factors. Here are some of the most common: Having a close relative with an eating disorder ...
“If you think 20 percent of genetic information in your nose is a lot of biological dark matter, if we looked at your gut, up to 40 or 50 percent of that information is biological dark matter. And even in the relatively sterile blood, around one to two percent of this information is...
RNA is a biological macromolecule that serves a number of different functions. Messenger RNA (mRNA), transcribed from DNA, serves as a template for synthesis of proteins. Protein synthesis is carried out by ribosomes, which consist of ribosomal RNA (rRNA) and proteins. Amino acids for protein ...
and other large-scale omics provides a comprehensive understanding of the different biological processes involved in this interaction, from growth and development to responses to biotic and abiotic stresses. With global climate change, differences in host pines susceptibility to PWN infection are expected...
Traditional speciation research based on the biological species concept has led to great advances in understanding how nonallopatric speciation occurs and how species diverge and remain separate from each other. However, this research has neglected the question of how new species arise in the first ...