{"common":{"save":0,"post_id":"9598","level":3,"total":10,"point":10,"point_extra":0},"segment":[{"id":"10388","post_id":"9598","mon_id":"1159539","chapter_id":"1160145","question":"<p data-pm-slice=\"0 0 []\">Trong qu\u1ea7n th\u1ec3, t\u1ec9 l\u1ec7 gi\u1edbi tính cho ta bi\u1ebft \u0111i\u1ec1u gì?<\/p>","options":["A. Ti\u1ec1m n\u0103ng sinh s\u1ea3n c\u1ee7a loài.","B. Gi\u1edbi tính nào \u0111\u01b0\u1ee3c sinh ra nhi\u1ec1u h\u01a1n.","C. Gi\u1edbi tính nào có tu\u1ed5i th\u1ecd cao h\u01a1n.","D. Gi\u1edbi tính nào có tu\u1ed5i th\u1ecd th\u1ea5p h\u01a1n."],"correct":"1","level":"3","hint":"","answer":"<p>\u0110áp án: <strong>A. Ti\u1ec1m n\u0103ng sinh s\u1ea3n c\u1ee7a loài.<\/strong><\/p><ul> <li data-end=\"165\" data-start=\"79\"><p data-end=\"165\" data-start=\"81\"><strong data-end=\"100\" data-start=\"81\">T\u1ec9 l\u1ec7 gi\u1edbi tính<\/strong> là t\u1ef7 l\u1ec7 gi\u1eefa <strong data-end=\"145\" data-start=\"115\">s\u1ed1 l\u01b0\u1ee3ng cá th\u1ec3 \u0111\u1ef1c và cái<\/strong> trong m\u1ed9t qu\u1ea7n th\u1ec3.<\/p><\/li> <li data-end=\"324\" data-start=\"166\"><p data-end=\"324\" data-start=\"168\">T\u1ec9 l\u1ec7 này \u1ea3nh h\u01b0\u1edfng tr\u1ef1c ti\u1ebfp \u0111\u1ebfn <strong data-end=\"223\" data-start=\"202\">kh\u1ea3 n\u0103ng sinh s\u1ea3n<\/strong> c\u1ee7a qu\u1ea7n th\u1ec3, vì n\u1ebfu quá l\u1ec7ch v\u1ec1 m\u1ed9t gi\u1edbi, s\u1ed1 l\u01b0\u1ee3ng cá th\u1ec3 có th\u1ec3 <strong data-end=\"315\" data-start=\"290\">giao ph\u1ed1i và sinh s\u1ea3n<\/strong> s\u1ebd gi\u1ea3m.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-07-05 11:30:13","option_type":"txt","len":3},{"id":"10389","post_id":"9598","mon_id":"1159539","chapter_id":"1160145","question":"<p data-pm-slice=\"0 0 []\">Ý ngh\u0129a c\u1ee7a nhóm tu\u1ed5i tr\u01b0\u1edbc sinh s\u1ea3n trong qu\u1ea7n th\u1ec3 là<\/p>","options":["A. không làm gi\u1ea3m kh\u1ea3 n\u0103ng sinh s\u1ea3n c\u1ee7a qu\u1ea7n th\u1ec3.","B. có vai trò ch\u1ee7 y\u1ebfu làm t\u0103ng tr\u01b0\u1edfng kh\u1ed1i l\u01b0\u1ee3ng và kích th\u01b0\u1edbc c\u1ee7a qu\u1ea7n th\u1ec3.","C. làm gi\u1ea3m m\u1eadt \u0111\u1ed9 trong t\u01b0\u01a1ng lai c\u1ee7a qu\u1ea7n th\u1ec3.","D. không \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn s\u1ef1 phát tri\u1ec3n c\u1ee7a qu\u1ea7n th\u1ec3."],"correct":"2","level":"3","hint":"","answer":"<p>\u0110áp án: <strong>B. có vai trò ch\u1ee7 y\u1ebfu làm t\u0103ng tr\u01b0\u1edfng kh\u1ed1i l\u01b0\u1ee3ng và kích th\u01b0\u1edbc c\u1ee7a qu\u1ea7n th\u1ec3.<\/strong><\/p><p data-end=\"264\" data-start=\"124\">Trong qu\u1ea7n th\u1ec3 sinh v\u1eadt, <strong data-end=\"177\" data-start=\"149\">nhóm tu\u1ed5i tr\u01b0\u1edbc sinh s\u1ea3n<\/strong> (t\u1ee9c là các cá th\u1ec3 còn nh\u1ecf, ch\u01b0a tr\u01b0\u1edfng thành sinh d\u1ee5c) có vai trò quan tr\u1ecdng \u0111\u1ed1i v\u1edbi:<\/p><ul data-end=\"516\" data-start=\"266\"> <li data-end=\"349\" data-start=\"266\"><p data-end=\"349\" data-start=\"268\"><strong data-end=\"295\" data-start=\"268\">S\u1ef1 phát tri\u1ec3n t\u01b0\u01a1ng lai<\/strong> c\u1ee7a qu\u1ea7n th\u1ec3 vì \u0111ây là l\u1ef1c l\u01b0\u1ee3ng <strong data-end=\"348\" data-start=\"329\">d\u1ef1 tr\u1eef sinh s\u1ea3n<\/strong>.<\/p><\/li> <li data-end=\"516\" data-start=\"350\"><p data-end=\"516\" data-start=\"352\">Các cá th\u1ec3 trong nhóm tu\u1ed5i này \u0111ang <strong data-end=\"399\" data-start=\"388\">l\u1edbn lên<\/strong>, phát tri\u1ec3n v\u1ec1 <strong data-end=\"443\" data-start=\"415\">kích th\u01b0\u1edbc và kh\u1ed1i l\u01b0\u1ee3ng<\/strong>, ch\u01b0a tr\u1ef1c ti\u1ebfp sinh s\u1ea3n nh\u01b0ng <strong data-end=\"515\" data-start=\"475\">s\u1ebd tham gia sinh s\u1ea3n trong t\u01b0\u01a1ng lai<\/strong>.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-07-05 11:30:41","option_type":"txt","len":3},{"id":"10390","post_id":"9598","mon_id":"1159539","chapter_id":"1160145","question":"<p data-pm-slice=\"0 0 []\">T\u1ec9 l\u1ec7 gi\u1edbi tính trong qu\u1ea7n th\u1ec3 thay \u0111\u1ed5i ch\u1ee7 y\u1ebfu theo y\u1ebfu t\u1ed1 nào?<\/p>","options":["A. L\u1ee9a tu\u1ed5i c\u1ee7a cá th\u1ec3 và s\u1ef1 t\u1eed vong không \u0111\u1ed3ng \u0111\u1ec1u gi\u1eefa cá th\u1ec3 \u0111\u1ef1c và cái.","B. Ngu\u1ed3n th\u1ee9c \u0103n c\u1ee7a qu\u1ea7n th\u1ec3.","C. Khu v\u1ef1c sinh s\u1ed1ng.","D. C\u01b0\u1eddng \u0111\u1ed9 chi\u1ebfu sáng."],"correct":"1","level":"3","hint":"","answer":"<p>\u0110áp án: <strong>A. L\u1ee9a tu\u1ed5i c\u1ee7a cá th\u1ec3 và s\u1ef1 t\u1eed vong không \u0111\u1ed3ng \u0111\u1ec1u gi\u1eefa cá th\u1ec3 \u0111\u1ef1c và cái.<\/strong><\/p><p data-end=\"279\" data-start=\"125\"><strong data-end=\"159\" data-start=\"125\">T\u1ec9 l\u1ec7 gi\u1edbi tính trong qu\u1ea7n th\u1ec3<\/strong> có th\u1ec3 <strong data-end=\"194\" data-start=\"167\">thay \u0111\u1ed5i theo th\u1eddi gian<\/strong>, <strong data-end=\"213\" data-start=\"196\">không c\u1ed1 \u0111\u1ecbnh<\/strong>, và <strong data-end=\"253\" data-start=\"218\">ch\u1ecbu \u1ea3nh h\u01b0\u1edfng c\u1ee7a nhi\u1ec1u y\u1ebfu t\u1ed1<\/strong>, trong \u0111ó <strong data-end=\"279\" data-start=\"264\">ch\u1ee7 y\u1ebfu là:<\/strong><\/p><ul data-end=\"501\" data-start=\"282\"> <li data-end=\"377\" data-start=\"282\"><p data-end=\"377\" data-start=\"284\"><strong data-end=\"296\" data-start=\"284\">L\u1ee9a tu\u1ed5i<\/strong>: Ví d\u1ee5, m\u1ed9t s\u1ed1 loài có t\u1ec9 l\u1ec7 gi\u1edbi tính khác nhau \u1edf các giai \u0111o\u1ea1n tu\u1ed5i khác nhau.<\/p><\/li> <li data-end=\"501\" data-start=\"380\"><p data-end=\"501\" data-start=\"382\"><strong data-end=\"430\" data-start=\"382\">T\u1ec9 l\u1ec7 t\u1eed vong không \u0111\u1ed3ng \u0111\u1ec1u gi\u1eefa \u0111\u1ef1c và cái<\/strong>: N\u1ebfu m\u1ed9t gi\u1edbi có t\u1ef7 l\u1ec7 t\u1eed vong cao h\u01a1n thì t\u1ec9 l\u1ec7 gi\u1edbi tính s\u1ebd b\u1ecb l\u1ec7ch.<\/p><\/li><\/ul>","type":"choose","extra_type":"classic","time":"0","user_id":"139","test":"0","date":"2025-07-05 11:31:10","option_type":"txt","len":3}]}