Search results
Study with Quizlet and memorize flashcards containing terms like Science, Observation, Inference and more.
- (1)
Study with Quizlet and memorize flashcards containing terms like science, observing, inferring and more.
What are the goals of science? 1 goal of science is to provide natural explanations for events in the natural world. Science also aims to use those explanations to understand patterns in nature and to make useful predictions about natural events.
- Mutation Definition
- Types of Mutation
- Examples of Mutation
- Related Biology Terms
- Quiz
At the simplest level, a mutationis a change or transformation. In biology, mutations refer to changes in chromosomes and genes, which typically manifest physically. The effect of a mutation can depend on the region in which the sequence of genetic material has been changed. The simplest and the most harmless are substitutions of a single base pair...
Mutations can be classified in various ways depending on the cause of the mutation, its effect on the function of the gene product or the kind of changes to the structure of the gene itself. Mutagenic agents such as carcinogens or high-energy radiation lead to changes to the genomic material. Some mutations occur as a natural byproduct of the error...
Sickle Cell Disease and Malaria
Sickle cell disease (SCD), so-named due to its characteristic sickling effect on red blood cells, usually manifests via blood clots, anemia, and bouts of pain known as “sickle-cell crises.” While many of these symptoms can be treated with medication, they still significantly lower the quality of life of their carriers. Although considered rare and a mutation, SCD is relatively well-researched. It takes place on the 11thchromosome, and is catalyzed by the inheritance of an abnormal hemoglobin...
Klinefelter’s Calicos
Klinefelter syndrome, also known as XXY syndrome, is a genetic mutation in which a male subject carries an extra X chromosome, therefore carrying the female genotype XX in addition to the traditional male genotype XY. Likewise, males with Klinefelter syndrome often have feminine features, such as breast tissue, and may not be able to reproduce. As it lies in the genetic code, which is homologous between most species, Klinefelter syndrome is not exclusive to humans. Therefore, cats, dogs, and...
Lactose Tolerance
We mentioned earlier how SCD, a mutation marked by sometimes life-threatening physical symptoms, also works to prevent malaria in West Africa. Lactose tolerance is another mutation that benefits those who have it. Human bodies were originally unable to produce lactase, an enzyme that digests the proteins in cow’s milk, after the first months of life. This is because humans often did not consume milk – or other dairy products, for that matter – into adulthood. The rise of pasteurization, as we...
Chromosome– A part of DNA that carries genetic information.Homologous– Having the same function or structure within a body, or between two species.1. Mutations like SCD, which sometimes have deadly side effects, do not become extinct due to natural selection because: A. The government wants them to stay. B. Mutations work outside of natural selection. Unlike traits, they cannot be bred out. C. They provide resistance or immunity to other, more serious illnesses. D.Mutations are a superbug tha...
Biology is a science, but what exactly is science? What does the study of biology share with other scientific disciplines? We can define science (from the Latin scientia , meaning “knowledge”) as knowledge that covers general truths or the operation of general laws, especially when acquired and tested by the scientific method.
Biology is a science, but what exactly is science? What does the study of biology share with other scientific disciplines? We can define science (from the Latin scientia , meaning “knowledge”) as knowledge that covers general truths or the operation of general laws, especially when acquired and tested by the scientific method.
What does the noun malversation mean? There are three meanings listed in OED's entry for the noun malversation, one of which is labelled obsolete. See ‘Meaning & use’ for definitions, usage, and quotation evidence. How common is the noun malversation? How is the noun malversation pronounced? Where does the noun malversation come from?
