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15:I[2582,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"AdviserInfo"] 16:I[6419,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"AdOnAdvice"] 17:I[7060,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"AdUnderAdvice"] 18:I[3194,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"CommentPostButton"] 19:I[6411,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"CommentItemAvatar"] 1a:I[6549,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"CommentItemName"] 1c:I[3866,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"AdOnAdviceList1"] 1e:I[3866,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"AdOnAdviceList2"] 20:I[3866,["51","static/chunks/795d4814-710d199cb1f51304.js","183","static/chunks/183-141f39fb5cb93742.js","23","static/chunks/app/advice/%5Bid%5D/page-26686d89cc5a4cf8.js"],"AdOnAdviceList3"] 1b:Teb7,まずは、おすすめの問題集から。 標準問題精講→110題ほど。入試標準的な良問が多く、おすすめ。これが理解できれば、入試問題は大抵解ける。 東大の生物25ヵ年→とても良い。思考力がつく。記述内容を簡潔にまとめる力もつく。 次に対策の仕方。 まず、実験考察問題で大事なのは、何を調べようとしているか理解することです。これは大抵問題文中に書いてありますが、実験内容からも分かることです。 次にそのためにどんな実験をしているのか理解しましょう。大抵は複数群に分けて、実験などに対するそれぞれの結果を見比べて、調べたいことを明らかにする手法をとっていると思います。 例をあげましょう。中胚葉誘導に関するものです。 数字は適当なのであてにしないでください。 <実験1> 内胚葉と外胚葉を接触した状態で培養すると、その間に中胚葉が誘導された。 <実験1.5> 内胚葉と外胚葉を分離したのち、再び接触した状態で培養すると中胚葉が誘導された。 <実験2> 内胚葉と外胚葉を分離して、それぞれ培養すると、内胚葉は内胚葉性組織に、外胚葉は外胚葉性組織になった。 <実験3> 1度分離した内胚葉と外胚葉を、10nmの孔が空いてある薄片を挟んで接触させ培養したところ、外胚葉側に中胚葉が誘導された。 <実験4> 実験3の薄片を5nmの孔が空いているものに変えると、中胚葉は誘導されなかった。 では考えていきましょう。 まず実験1で、内胚葉と外胚葉が接触していると中胚葉が誘導されること(事実)がわかりました。 この時、可能性として A内胚葉→中胚葉 B外胚葉→中胚葉 C内胚葉、外胚葉→中胚葉 が考えられ、また、 この誘導は ①接触によるものなのか ②接触に関係ない、分子によるものなのか ③そもそも接触しなくても勝手にできるものなのか という3通りの考えができます。 ①〜③を検証していきましょう ③を検証するのが実験2ですね。 実験2から③は正しくないことがわかりました。 ①、②を検証するのが実験3,4です。 まず、実験3から接触は不要なことがわかるので、①は否定されます。故に②が正しいだろうということになります。では分子の大きさは？ そこで実験3,4を比べると分子の大きさXは5nm\n内胚葉と外胚葉を接触した状態で培養すると、その間に中胚葉が誘導された。\n\n<実験1.5>\n内胚葉と外胚葉を分離したのち、再び接触した状態で培養すると中胚葉が誘導された。\n\n<実験2>\n内胚葉と外胚葉を分離して、それぞれ培養すると、内胚葉は内胚葉性組織に、外胚葉は外胚葉性組織になった。\n\n<実験3>\n1度分離した内胚葉と外胚葉を、10nmの孔が空いてある薄片を挟んで接触させ培養したところ、外胚葉側に中胚葉が誘導された。\n\n<実験4>"]}],["$","div","advice-part-1",{"children":[["$","div",null,{"className":"my-4","children":["$","$L16",null,{"id":"adsbygoogle-init-on-advice-L0v-TXUBTqPwDZPuqb-9-1"}]}],"実験3の薄片を5nmの孔が空いているものに変えると、中胚葉は誘導されなかった。\n\nでは考えていきましょう。\nまず実験1で、内胚葉と外胚葉が接触していると中胚葉が誘導されること(事実)がわかりました。\nこの時、可能性として\nA内胚葉→中胚葉\nB外胚葉→中胚葉\nC内胚葉、外胚葉→中胚葉\nが考えられ、また、\nこの誘導は\n①接触によるものなのか\n②接触に関係ない、分子によるものなのか\n③そもそも接触しなくても勝手にできるものなのか\nという3通りの考えができます。\n\n①〜③を検証していきましょう\n③を検証するのが実験2ですね。\n実験2から③は正しくないことがわかりました。\n①、②を検証するのが実験3,4です。\nまず、実験3から接触は不要なことがわかるので、①は否定されます。故に②が正しいだろうということになります。では分子の大きさは？\nそこで実験3,4を比べると分子の大きさXは5nm