Cientistas analisam mamute e encontram fósseis de cromossomos pela 1ª vez

[{"selector":"#anim-0a23e8e0-d49f-4198-992c-5fc9151b7e0e","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3c43cade-5e4d-4d78-bb71-c29b3b27e77d","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-6f3147ab-b913-48ed-9f8c-f5b85beb9100","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-0538e3c5-035a-491f-bad0-dd48fe41ea74","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Elena Kizilova/Institute of Cytology and Genetics SB RAS

[{"selector":"#anim-a96cdfa2-e6c8-4134-a13e-e6887d967469","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3bfe50d3-1a22-4659-9981-045f95583c4c","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-91df6e38-afe0-433a-be9e-52102588b1a5","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-6c740f1b-2238-42d4-91e3-3c1b11b4a70d","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Em descoberta inédita, cientistas encontraram pedaço de pele de mamute-lanoso contendo cromossomos fósseis durante uma escavação em um permafrost, solo congelado por longos períodos, na Sibéria Pexels

[{"selector":"#anim-e373afaf-6045-43e5-b11d-28d1858cae05","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-13359ca1-acdf-448a-a26f-8e1529a46589","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-80aa12ad-59a9-4d8d-90e6-729d0c518413","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-1dc02a9b-6f83-4f33-9a73-eb55b1dd4fc1","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Em 2018, pesquisadores encontraram os restos de um mamute de 52 mil anos perto de Belaya Gora, na Sibéria. As baixas temperaturas congelaram o permafrost, preservando os cromossomos com detalhes minuciosos Pexels

[{"selector":"#anim-e7d25500-93e3-4364-b1b4-459b956404ca","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-addcbbfb-a414-4f19-b1fd-b0fcca271c4f","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-1873effa-e7ce-405e-97cf-6004732be982","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-04b76c54-c066-4db1-be2b-5ef18136bfdc","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Embora amostras de DNA antigo sejam frequentemente fragmentadas, os cromossomos fósseis contêm milhões de letras do código genético , proporcionando uma visão detalhada do código genético do animal Pexels

[{"selector":"#anim-a10ce884-ac4b-49a2-b990-06e2b3ff2c3e","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-1bdb38e3-c349-4f1b-a355-a8496d307d09","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-7c529c1c-99c9-49b9-99ad-29a6fc88a96f","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-8af235ad-1539-4199-9089-cd5430f0c5f7","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Erez Lieberman Aiden, coautor correspondente do estudo publicado na revista Cell, afirmou que nunca antes haviam sido encontrados cromossomos fósseis Freepik

[{"selector":"#anim-80106090-8543-43b0-9ba7-593dcd1af166","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-95420767-3215-4c12-8846-54e83dc16868","keyframes":{"transform":["translate3d(0px, 351.44731%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3a00dee0-55e6-4148-a218-fb9bb26797eb","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-dc36c8e9-ca1c-4f02-8c11-2302a9114203","keyframes":{"transform":["translate3d(0px, 271.34512%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Aqui, os fragmentos estão claramente organizados em 3D — essencialmente como estavam nos cromossomos originais no mamute vivo Erez Lieberman Aiden, coautor do estudo

[{"selector":"#anim-a6ed0421-d77b-4817-b6ed-8891d7f012c8","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-4e7f73e4-6fd8-475a-be39-b58dfdae27f4","keyframes":{"opacity":[0,1]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"both"}] [{"selector":"#anim-b0992f61-23db-4452-a82d-37a2617cbcbe","keyframes":{"transform":["scale(0.3333333333333333)","scale(1)"]},"delay":0,"duration":500,"easing":"cubic-bezier(.3,0,.55,1)","fill":"forwards"}] [{"selector":"#anim-8e45bec2-c0ac-460b-af56-79a2030f3551","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] Os pesquisadores compararam genes individuais da amostra do mamute com os equivalentes nos elefantes modernos, observando diferenças na atividade dos genes que regulam os folículos capilares Pexels

CNNBRASIL.COM.BR

[{"selector":"#anim-701d6203-2e12-4368-bb6f-39bda7540574","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-8a713b2c-b7c8-4bd1-9a7b-b492536a06ea","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.4, 0.4, 0.0, 1)","fill":"both"}] [{"selector":"#anim-53b132b6-84a0-4ddb-a573-cec43a1df50b","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-5706dec1-4a90-4806-ab6f-4e7a1392d4b2","keyframes":{"transform":["translate3d(0px, 1483.57597%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-3dbfe4c8-97fe-45ca-934b-7b1e3eec2837","keyframes":{"opacity":[0,1]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-2bfa82de-c4f1-4852-8c3c-7dc27aff25a1","keyframes":{"transform":["translate3d(-117.84387%, 0px, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":600,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-9b52ca0e-2d15-48a9-a2c9-e46704d697e2","keyframes":{"opacity":[0,1]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] [{"selector":"#anim-57cb95ae-1f63-4fcc-939c-ca03606f1815","keyframes":{"transform":["translate3d(0px, 867.28444%, 0)","translate3d(0px, 0px, 0)"]},"delay":0,"duration":1000,"easing":"cubic-bezier(0.2, 0.6, 0.0, 1)","fill":"both"}] Pexels leia mais em