The process of inheritance is hugely important for understanding the complexity of life on earth in particular for its role in sexual reproduction and evolution for this mendels contributions to science biology and genetics are still widely recognized and applauded within the scientific community alleles genotype phenotype. The mechanisms of evolution operate at the genomic level changes in dna sequences affect the composition and expression of our genes the basic units of inheritance to understand how different species have evolved we have to look at the dna sequences in their genomes our evolutionary history is written into our genome. Cbse class 10 science notes chapter 9 heredity and evolution pdf free download is part of class 10 science notes for quick revision here we have given ncert class 10 science notes chapter 9 heredity and evolution
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