This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Tropical maize hybrid, a single cross of flint and dent inbred lines, is an important crop throughout the Americas and Africa. Crop yield, however, is highly dependent on nitrogen availability, and fertilizers are therefore often necessary to increase production. Developing more nitrogen-efficient maize would not only cut costs for farmers, it would also increase crop yield and reduce environmental impacts. But how do you make a plant more nitrogen efficient? The performance and production of crops can be improved by selectively crossing individuals with desired traits. When such plants are crossed, they produce hybrids that are often bigger, stronger, and more vigorous than either of the parent plants. By carefully choosing which individuals are used in creating these hybrids, specific traits, such as nitrogen efficiency, can be selected for..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

This resource features tools designed for child welfare leaders in California to use and adapt to meet the workforce development needs of their specific county or jurisdiction.

In this unit, we describe the theory of evolution by natural selection as proposed by Charles Darwin in his book, first published in 1859, On The Origin of Species by Means of Natural Selection, or The Preservation of Favoured Races in the Struggle for Life. We will look at natural selection as Darwin did, taking inheritance for granted, but ignoring the mechanisms underlying it.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Drinking water is essential for life, but drinking water distribution systems can contain hidden ecosystems. Complex microbial communities reside in water and the systems used for water storage and distribution. To manage these microbes and keep drinking water safe, water treatment plants often use disinfectants like chlorine. Unfortunately, disinfectants may affect the safety of drinking water by potentially boosting the formation of harmful disinfection byproducts. A recent study assessed the effect of disinfection treatment on microbial communities in drinking water. Using metagenomics, researchers compared the microbiomes of disinfected and non-disinfected drinking water distribution systems. The results suggested that disinfected drinking water contains a less diverse microbiome than non-disinfected water, and disinfection may select for microorganisms that can feed off of decaying microbes..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.

Genetic mutations provide valuable tools for analyzing biochemical pathways in yeast. In this module, students use deletion mutants to analyze the steps in methionine biosynthesis in Saccharomyces cerevisiae. At the end of this module, students will be able to:understand and use the correct genetic nomenclature for genes, proteins and mutant strainsexplain how genetic screens are used to isolate mutant strains with particular phenotypesdistinguish various met deletion strains by their ability to grow on selective media containing different sulfur sources and by their appearnace on indicator mediapredict how mutations in various MET  genes will affect the intracellular concentrations of intermediates in the methionine biosynthesis This module is part of a semester-long introductory lab class, Investigations in Molecular Cell BIology, at Boston College.

Human resource or manpower planning is of great important in the general development and growth of organizations. Thus personnel and Human resources experts, managers and practitioners have now made it known to management that adequate attention be given to it with a view to ensuring better use of other resources especially capital. Organisations have also realized that with increasing competition and complexity in business, more time should be devoted to effective human resources planning to achieve desired goals. Furthermore organisations have known that not only is the overall cost of human resources high , that human element is complex, unpredictable and sometimes difficult to develop or change unlike capital that is relatively easier to acquire, manager or control.

These materials have been put together to help students and youth to learn the basics of judging and evaluating dairy cattle using various methods. This resource was designed to be used with other resources to help teach basic dairy cattle judging and evaluation. There are numerous 4-H, Cooperative Extension and Breed Association booklets freely available, referred to in the document. However, this resource differs as it is intentionally full of visual examples and videos. The objective is to provide educators with additional resources to help beginning cattle judges understand visual evaluation and comparative judging techniques, as well as breed standards, linear scoring, oral reasons and the basics of fitting and showmanship.

Students will analyze animals against a standard ideal, and explain the relationship between an animal’s form and function.

This is a complete course on Texas State government, developed by Austin Community College.

This resource is a video abstract of a research paper created by Research Square on behalf of its authors. It provides a synopsis that's easy to understand, and can be used to introduce the topics it covers to students, researchers, and the general public. The video's transcript is also provided in full, with a portion provided below for preview:

"Oceans connect all life and affect climate worldwide, and interestingly, the ocean’s smallest residents have a huge role in this process. The ocean microbiota modulates global biogeochemical cycles, which influences energy balance in the atmosphere. Unfortunately, the underlying factors structuring the ocean microbiota are unclear, and better understanding is needed to help combat the effects of global climate change. A recent study examined the ecological mechanisms shaping the smallest surface-ocean microbiota: prokaryotes and picoeukaryotes. Researchers identified patterns in DNA sequencing data collected by two global ocean expeditions, Malaspina-2010 and Tara Oceans. Their results showed that different ecological mechanisms affect prokaryotes vs. picoeukaryotes. While picoeukaryotes were largely structured by dispersal limitation, displaying higher differentiation between communities, prokaryotes were structured by a combination of temperature-driven selection, dispersal limitation and random drift..."

The rest of the transcript, along with a link to the research itself, is available on the resource itself.