I look up cougars or any animal they all look the same? Like If i type on google as example of tiger i see multiple tigers of bengal tiger but when its two unrelated bengal tigers they look so munch alike. Why can't they look differently  Like me and my firend both humans but we have different facials and different hair styles and different lookig body but aniamls like bengal tiger or two dogs in same breed look so mucnh alike even though they not related to be siblings

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Genomic studies

Genomic studies (genomics) is the study of the whole genome of an organism. Using bioinformatics and high-performance computing, genomic researchers examined massive amounts of deoxyribonucleic acid (DNA)-sequence data to discover variations or mutations that affect drug response, health, or disease. Genomics is a much younger discipline than genetics, having only emerged in the last few decades as a result of technological advancements in DNA sequencing and computational biology.