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Cell Autonomous Sex Identity
Cell Autonomous Sex Identity (CASI) refers to the intrinsic determination of a cell's sex-specific characteristics based on its Genetics, genetic and Epigenetics, epigenetic makeup, independent of external Hormone, hormonal influences. Unlike traditional models of Sexual differentiation, sex differentiation, which emphasize the role of gonadal hormones in directing Cell (biology), cellular and Tissue (biology), tissue-level sexual traits, CASI highlights the ability of individual cells to express their sexual identity autonomously. This concept has significant implications for understanding sexual dimorphism, development, and the evolutionary diversity of sex determination mechanisms across species. CASI has been observed in various organisms, including birds, insects, and fish, and challenges the long-held view that Hormone signalling, hormonal signaling is the primary determinant of sex-specific traits. In certain species, CASI plays a critical role in development, with sex chromos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genetics
Genetics is the study of genes, genetic variation, and heredity in organisms.Hartl D, Jones E (2005) It is an important branch in biology because heredity is vital to organisms' evolution. Gregor Mendel, a Moravian Augustinians, Augustinian friar working in the 19th century in Brno, was the first to study genetics scientifically. Mendel studied "trait inheritance", patterns in the way traits are handed down from parents to offspring over time. He observed that organisms (pea plants) inherit traits by way of discrete "units of inheritance". This term, still used today, is a somewhat ambiguous definition of what is referred to as a gene. Phenotypic trait, Trait inheritance and Molecular genetics, molecular inheritance mechanisms of genes are still primary principles of genetics in the 21st century, but modern genetics has expanded to study the function and behavior of genes. Gene structure and function, variation, and distribution are studied within the context of the Cell (bi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
