hhmi biointeractive rock pocket mouse answers

Depending on environmental conditions, inherited characteristics may be advantageous, neutral, or detrimental.Suppose you are studying a recently discovered population of rock pocket mice with dark-colored fur that lives on volcanic rock. In your own words, explain how this is possible. Traits that confer an advantage may persist in the population and are called adaptations. Carroll states that while mutation is random, natural selection is not.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 was the rock pocket mouse able to survive over time while its environment changed Source: YouTube, HHMI Biointeractive.

Inherited characteristics affect the likelihood of an organism's survival and reproduction.

There are at least two genes involved in creating dark-colored mouse fur. Instead, Nachman describes evolution occurring again and again on the lava flows. If the mice had the same mutation, it would imply a single evolution of dark color.

If dark-colored mice had a competitive advantage of 5, it would take more than 1,000. If dark-colored rock pocket mice had a competitive advantage of 0.1, it would take more than 1,000 years for 95 of the population to have dark fur. New heritable traits can result from mutations. Dark-colored fur evolved only once in rock pocket mice. Dark-colored rock pocket mice, in this population, have fewer offspring than light-colored rock pocket mice.In addition, students analyze the MC1R signaling pathway in both light- and dark-colored rock pocket mouse populations. Evolution results from natural selection acting upon genetic variation within a population. Students will use amino acid sequences from the rock pocket mouse genome to illustrate the different levels of protein structure and the relationship between a protein’s structure and function.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 Fill a few plastic sandwich bags with 15 grams of paper clips and pass them around so that students have an idea of how much a rock pocket mouse weighs.Alignment with the Next Generation Science Standards.The big issues – Pacing, diversity, complexity, and trends.Macroevolution – Evolution above the species level.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?.

Hhmi biointeractive rock pocket mouse answers