Chromosomes notes pdf

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Chromosomes notes pdf

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That genetic material, which determines how an organism develops, is a molecule of deoxyribonucleic acid (DNA) The sex chromosomes are one of thepairs of chromosomes DNA contains long chains of chemicals called bases. Sperm and egg cells have only one of each pair of chromosomes for a total of Each chromosome contains hundreds to thousands of genes. ‘haploid’ (n)pair chromosomes are autosomes whilepair is sex Chromosome means: chromacolour; somebody. Karyotype: Karyotype refers to the characteristic morphological features of chromosomes of a species such as Each chromosome has a unique G-banding pattern that is constant from individual to individual ISCN (International System for Cytogenetic Nomenclature)P=short arm The Structure of Genes. A chromosome is a structure that occurs within cells and that contains the cell's genetic material. Chromosome Anomalies I GFChromosome Anomalies II LS (PDFofMB) (PDFofMB) (PDFofMB)Genetics of Cancer I LSGenetics of nature, structure and role of genes, deoxyribonucleic acid and chromosomes, describes how chromosomes determine gender, and touches on chromosomal abnormalities Characteristic Features of Chromosomes: i. These chains coil intochromosomes, RNA (ribonucleic acid) is similar to DNA; it also contains long chains of bases connected by a sugar ‘backbone’. chromosome is a thread-like self-replicating genetic structure containing organized DNA molecule package found in the nucleus of the cell. Inheritance of Chromosomes, Genes and DNA. Inheritance is the transmission of genetic information from generation to generation. Genes are the % of our genetic code that act as templates for making proteins Study of chromosome structure, morphology, number and typesKaryotype and Idiogram. Every normal human cell, except for sperm and egg cells, haspairs of chromosomes for a total ofchromosomes. Chromosomes are Chromosome term was introduced by Waldeyer in Number of chromosomes is fixed in each cell but varies from species to species. While in gametes (male or female) the number isi.e. complex network of DNA and protein coiled around each other and helps to fit DNA inside the nucleus is known as a chromosome The Human Chromosomes. In human beings, the total number isorpairs named as ‘diploid’ (2n).

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