Sourav Pan
What is Cytoplasmic or Extra-Nuclear Inheritance? Cytoplasmic inheritance, also known as extrachromosomal or extranuclear inheritance, refers to the transmission of genetic material that is not found within the nucleus but rather in the cytoplasm of a cell. This type of inheritance contrasts with Mendelian inheritance, which involves nuclear genes. In cytoplasmic inheritance, the genetic information … Read more
What is Chi-square Test? Formula of chi-square The Chi-square test is symbolically represented as [latex] \chi^2 [/latex], and the formula for comparing variances is: Where: Similarly, when the Chi-square test is used as a non-parametric test for goodness of fit or testing independence, the following formula is applied: Where: Properties of the Chi-Square Test The … Read more
What is Gene? What is Allele? Differences Between Gene and Allele Understanding the concepts of genes and alleles is crucial in genetics. While both terms are fundamental to the study of heredity, they refer to different aspects of genetic information. Here, we explore the distinctions between genes and alleles, outlining their roles and characteristics in … Read more
What is Linkage? What is Crossing Over? Difference Between Linkage and Crossing Over Here is a detailed comparison of these two genetic phenomena: Aspect Linkage Crossing Over Definition Tendency of genes close on the same chromosome to be inherited together during meiosis. Exchange of genetic material between non-sister chromatids of homologous chromosomes. Relationship of Related … Read more
What is Lethal Allele? Definition of Lethal Allele A lethal allele is a gene variant that causes the death of an organism carrying it, either during embryonic development or later in life. Types of Lethal Allele Lethal alleles are genetic variations that result in the death of an organism carrying them. They can be categorized … Read more
What is Allele? Definition of Allele An allele is a specific variant of a gene that occupies a particular position (locus) on a chromosome, and different alleles can result in variations of a trait. Each individual inherits two alleles for each gene, one from each parent. Features of Alleles Types of Alleles There are different … Read more
What is Polygenic Inheritance (Quantitative inheritance)? Definition of Polygenic Inheritance Polygenic inheritance is a genetic mechanism where a single phenotypic trait is controlled by the additive effects of multiple genes, resulting in continuous variation rather than discrete categories. Characteristics of Polygenic Inheritance Examples of Polygenic Inheritance in Humans This section explores how polygenic inheritance influences … Read more
What is Non-Mendelian Inheritance? Types of Non-Mendelian Inheritance Non-Mendelian inheritance patterns reveal a range of genetic mechanisms that extend beyond Mendel’s classical laws of inheritance. These patterns involve complex interactions between genes and their expression. The following are key types of non-Mendelian inheritance:
In the 1860s, Gregor Mendel, an Austrian monk, revolutionized the field of genetics with his foundational work on inheritance patterns. His experiments with pea plants led to the development of Mendelian inheritance, which is based on the concept that heredity operates through discrete units called genes. These genes, according to Mendel, act independently within an … Read more
Discover the essential reads that will deepen your understanding of economic botany, the study of plants and their economic significance. This curated list features five highly regarded books that cover a range of topics, from the historical use of plants in various cultures to the modern applications in agriculture, medicine, and industry. Whether you’re a … Read more
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