You searched for:

Heredity, Human
Plant Diversity
4 entries
Refine search

Search Results:

Remove Star
Location & Availability
Call #

Mendel and the Gene Splicers [electronic resource]

Darwin's theory of natural selection paved the way for the field of genetics. But the concept of a gene didn't exist in Darwin's time, and it was several more decades before science could clearly show how an organism passes characteristics on to its offspring. This program spotlights the life and work of Gregor Mendel, an Augustinian monk living in what is today the Czech Republic - and the father of modern genetic science. The film follows Mendel's studies of the reproduction of pea plants in his monastery garden, studies which noted the effects of cross-breeding on flower color, pod color, and pod shape; his awareness that, while only one "factor" or genetic characteristic may be visibly inherited, others lie dormant and can reappear in later generations; and the scant recognition [...]

Genes and Cloning [electronic resource]: Science of Selective Breeding

Public controversy surrounding cloning and genetic modification increases with each new development in the field. Illustrating concepts at the heart of the debate, this program shows how biotechnology now drives large-scale agriculture through genetic engineering and sophisticated selective breeding. Outlining ways in which humans have indirectly modified plants and animals since the dawn of agriculture, the program details our ability to construct and insert genes for desirable characteristics into plants and increase livestock productivity with beneficial traits-screening out animals with disease or lower food yields. Engaging animation sequences reinforce important biotech concepts.
2009; 2006

Designer Genes [electronic resource]: Science and Ethics of Genetic Engineering

From selective breeding in agriculture to animal cloning and the production of recombinant proteins, science continues to develop ways to modify the genetic code. This program spotlights the basic tools and techniques for manipulating DNA and how these are also used to investigate genetic functions. Viewers will learn about the coding and non-coding sections of DNA; the basics of PCR or the polymerase chain reaction; the use of viral vectors and plasmids in order to transfer DNA; and the various types of cloning, including molecular, cellular, and nuclear. Ethical questions arising from genetic engineering and the manipulation of DNA are also discussed.
2009; 2008

Natural Selection [electronic resource]: Its Place in Today's World

How do humans influence changes in other species? Has Homo sapiens itself stopped evolving? This program explores natural selection as an ongoing phenomenon, showing how evolutionary processes continue to shape the future of all life on Earth. Exploring the competition for resources, territory, and mates that occurs in any ecosystem, the video illustrates how species differentiation takes place-whether the environment is a petri dish, a jungle, or a major city. Also discussed: morphological, physiological, and behavioral variation; the relationship between agriculture, selective breeding, and genetic modification; and the puzzling anthropological discovery known as the Hobbit.
2009; 2008