In this article we will discuss about the chi-square method for testing the goodness of seed samples. Application of statistical methods in biological experiments is called Biometry. A very important use of biometry in Genetics is for testing whether an observed ratio may be taken as fit for an expected ratio. For examples, the expected F2 phenotypic monohybrid ratio is [...]
In this article we will discuss about the types and advantages of using microtome. Types of Microtomes: The inherent defects of handmade sections can be eliminated by using a microtome. Three types of microtomes are available: Rotary, Rocking and Sliding Microtomes (Fig. 3.1). A Rotary microtome is worked by rotating a wheel fitted with a handle. The razor is placed [...]
In this article we will discuss about the study of community structure. A "vegetation is the sum total of plants covering an area" (Weaver and Clements, 1966) which generally consists of a number of communities. According to Benton and Werner (1974) "a biological community consists of all the organisms living together in an interrelated fashion in a given environment". Biological [...]