複選題9. 配子形成(Gametogenesis)是生物通過減數分裂將雙倍體(2n)生殖母細胞轉變為單倍體 (n)成熟配子(精子或卵子)的過程。下列有關配子形成過程的敘述，哪些是正確的？ (A)若初級精母細胞含有染色體數量為 20，則其中 10 條源於自身的母系 (B)不論是否發生互換，次級卵母細胞含有初級卵母細胞染色體數的 1/2 (C)若有互換發生，則一個 2n 的初級精母細胞可產生 4 種不同基因型的精子 (D)經減數分裂，若無互換發生，此卵細胞亦具遺傳多樣性 (E)若無互換發生，n = 4 的二倍體生物所產生的配子中，三條染色體全部源自同一親代的機

複選題

9. 配子形成(Gametogenesis)是生物通過減數分裂將雙倍體(2n)生殖母細胞轉變為單倍體 (n)成熟配子(精子或卵子)的過程。下列有關配子形成過程的敘述，哪些是正確的？
(A)若初級精母細胞含有染色體數量為 20，則其中 10 條源於自身的母系
(B)不論是否發生互換，次級卵母細胞含有初級卵母細胞染色體數的 1/2
(C)若有互換發生，則一個 2n 的初級精母細胞可產生 4 種不同基因型的精子
(D)經減數分裂，若無互換發生，此卵細胞亦具遺傳多樣性
(E)若無互換發生，n = 4 的二倍體生物所產生的配子中，三條染色體全部源自同一親代的機

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統計： A(4), B(5), C(2), D(6), E(0) #3834959

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題目核心概念本題測驗對減數分裂與配子形...

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複選題17. Plant hormones (phytohormones) trigger significant physiological changes at extremely low concentrations. Their mechanism of action typically involves the binding of hormone molecules to specific receptors, which activates internal signal transduction pathways to regulate gene expression or enzymatic activity. Based on current understanding of plant hormone signaling, which of the following statements are correct? (A) Each hormone triggers a single, specific physiological response that remains consistent across all tissues and plant species. (B) The same hormone can produce different physiological outcomes depending on the tissue type, developmental stage, and receptor/signaling context. (C) Hormone action is strictly independent of dosage; the physiological outcome is determined only by the presence or absence of the signal. (D) Physiological outcomes are often the result of complex interactions—such as synergy or antagonism—between multiple hormone classes rather than a single isolated signal. (E) Plant hormones act only locally at the site of synthesis and are incapable of functioning as long-distance systemic signals through vascular tissues.

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