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Os cromossomos são corpúsculos compactos que carregam a informação genética. Cada cromossomo é constituído por uma longa e linear molécula de DNA associada à proteínas. Essas proteínas são responsáveis por manter a estrutura do cromossomo e auxiliar no controle das atividades dos genes localizados nas moléculas de DNA. 📽@singlecellanimation #repost from @canalneurogenese Reposted by @repostfast
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O que é um Cromossomo? Como Funciona? Genética - Vídeo Animado
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A síndrome de Patau está caracterizada por uma cópia extra do cromossomo 13, isso significa que há três copias do cromossomo 13 ao invés de duas. Isso se deve mais comumente a não disjunção na meiose — que ocorre em mães com idade avançada, onde os cromossomos não se separam adequadamente durante a divisão celular, resultando em um número anormal de cromossomos. Outra causa é a translocação robertsoniana desequilibrada.
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