![]() ![]() Depending on environmental conditions, inherited characteristics may be advantageous, neutral, or detrimental.Traits that confer an advantage may persist in the population and are called adaptations.Over time, the proportion of individuals with advantageous traits may increase (and the proportion with disadvantageous traits may decrease) due to their chances of surviving and reproducing. How quickly can natural selection work 'The Making of the Fittest: Natural Selection and Adaptation' tells the story of a living example of.Inherited characteristics affect the likelihood of an organism's survival and reproduction.New heritable traits can result from mutations.Evolution results from genetic drift acting upon genetic variation within a population.Evolution results from natural selection acting upon genetic variation within a population.Evolution occurs through multiple mechanisms.Not all similar traits are homologous some are the result of convergent evolution.There is a fit between organisms and their environments, though not always a perfect fit.An organism's features reflect its evolutionary history.Information on controversies in the public arena relating to evolution.Alignment with the Next Generation Science Standards.The big issues – Pacing, diversity, complexity, and trends.computer graphing software or graph paper and colored pencils). Macroevolution – Evolution above the species level A typical rock pocket mouse is about 170 millimeters long from its nose to the end.Microevolution – Evolution within a population.Mechanisms: the processes of evolution – Selection, mutation, migration, and more.The history of life: looking at the patterns – Change over time and shared ancestors.An introduction to evolution: what is evolution and how does it work?.OCR Gateway, GCE Biology, Paper J247, 2016. All the organisms living in this habitat are called the. ![]() The group of mice living in this habitat is called a population.The grass plants are producers in this food web.On the other hand, dark-colored rock pocket mouse populations have been found living on black, basaltic rock formations caused by geologic lava flows. The mice get most of their food from grass plants.Ĭomplete the following sentences about this food web. Most rock pocket mouse populations have sandy-colored fur, which is consistent with the light color of the desert rocks and sand on which they live. The rock pocket mouse is a small grey-coloured mouse that lives in Mexico. They might ask you about a process such as the carbon cycle or the method you would use in an experiment. You will be expected to write in more depth for three and four mark questions. Sometimes you can gain a second mark by giving the units in a calculation or stating specific data points, eg during the first two years, the number of lions decreased by seven. It is essential that you give two different answers if a question is worth two marks. The number of marks per question part is given in this form ' '. If you are asked to explain why a pattern or trend is seen in a graph, you will be expected to use your science knowledge, not just say what you see (which is a description), eg 'the graph shows a steep linear increase for the first three hours because…'Įxplain how and why questions often have the word 'because' in their answer. If you are asked to describe a graph, you will be expected to write about its overall shape, whether it is linear or curved, the slope of gradients etc. The command words 'describe' and 'explain' can be confusing. The activity involves collecting and graphing data and making evidence-based claims. You are studying a new population of rock pocket mice in Arizona. (c) The same mutation spontaneously arose in the two different populations. They then order those images based on the data and their knowledge of evolution by natural selection. (b) The volcanic rock caused the same mutation in each rock pocket mouse population, resulting in dark coloration. 'compare' where you describe the similarities and/or differences between things Students analyze data from images of rock pocket mouse populations in different settings and over time.'suggest' where you use your knowledge in an unfamiliar situation.'define' to give the meaning of an important word.'complete' to fill in a gap in a table or graph.'calculate' or 'determine' for maths questions Rock Pocket Mouse Illustrations (downloadable file on the activity webpage) The Making of the Fittest: Natural Selection and Adaptation video.Some command words are easy to understand such as: One to four mark questions will start with command words such as 'describe' or 'explain'. ![]()
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