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The Making of the Fittest: Natural Selection and Adaptation

The Making of the Fittest: Natural Selection and Adaptation

http://www.hhmi.org/biointeractive/making-fittest-natural-selection-and-adaptation

Related:  HumanitatDNA, RNA, ProteinEvolution

Teaching Evolution through Human Examples The "Teaching Evolution through Human Examples" (TEtHE) three-year exploratory research and development project was funded by National Science Foundation Discovery Research K-12 grant #1119468. The project has created four curriculum units for Advanced Placement (AP) Biology classes, aligned to the learning objectives, using human case studies to teach core evolutionary principles. The curriculum units are: (1) Adaptation to Altitude, (2) Malaria, (3) Evolution of Human Skin Color, and (4) What Does It Mean To Be Human?. The project has also created a CRS (Cultural and Religious Sensitivity) Teaching Strategies Resource to help teachers create a comfortable and supportive classroom environment for teaching evolution. More information about the project can be found here (link is external).

Homeobox gene family Homeobox genes are a large family of similar genes that direct the formation of many body structures during early embryonic development. In humans, the homeobox gene family contains an estimated 235 functional genes and 65 pseudogenes (structurally similar genes that do not provide instructions for making proteins). Homeobox genes are present on every human chromosome, and they often appear in clusters. Many classes and subfamilies of homeobox genes have been described, although these groupings are used inconsistently. Homeobox genes contain a particular DNA sequence that provides instructions for making a string of 60 protein building blocks (amino acids) known as the homeodomain.

Evolution: Library: Evolution of Camouflage In the insect world things are often not what they seem, especially if you're a hungry predator. For 250 million years, insects have survived because they often appear to be something other than what they really are. Is it a bug, a twig, or a leaf? Is that butterfly the bitter-tasting one, or the delicious one that resembles it? An astonishing number of insects have evolved survival mechanisms that involve mimicry, camouflage, and disguise. Tools & Food New Tools, New Foods Dawn of technology By 2.6 million years ago Early humans in East Africa used hammerstones to strike stone cores and produce sharp flakes. RNA Splicing Home DNA Learning Center Preparing students and families to thrive in the gene age Website Search RNA Splicing Description: A step-by-step 2D animation shows how introns are removed during RNA splicing.

Evolution: Library: Tale of the Peacock At a singles cocktail party, the ending is often predictable. A female may choose a male from several because he is attractive. But why does she think he is good looking? Scientists, stumped by that question throughout the animal kingdom, hypothesized that something more than chemistry drives mate choice. 2D Animation of Alternative RNA Splicing Home DNA Learning Center Preparing students and families to thrive in the gene age Website Search Hands-on Activities for Teaching Biology to High School or Middle School Students by Drs. Ingrid Waldron and Jennifer Doherty, University of Pennsylvania The expression "hands-on, minds-on" summarizes the philosophy we have incorporated in these activities - namely, that students will learn best if they are actively engaged and if their activities are closely linked to understanding important biological concepts.

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