14. Meiosis increases genetic variation through independent assortment and crossing over. In which stage of meiosis does crossing over occur? (A) prophase I (B) prophase II (C) metaphase I (D) metaphase II (E) anaphase I

14. Meiosis increases genetic variation through independent assortment and crossing over. In which stage of meiosis does crossing over occur?
(A) prophase I
(B) prophase II
(C) metaphase I
(D) metaphase II
(E) anaphase I

答案：登入後查看
統計： A(2), B(0), C(2), D(0), E(0) #3853319

私人筆記 (共 1 筆)

一起撐住一起上榜

2026/04/01

私人筆記#7938980

未解鎖

減數分裂 (Meiosis)互換 (Cr...

(共 251 字，隱藏中）

前往觀看

13. Suppose a person begins breathing very rapidly while resting (hyperventilating), which of the following best describes how homeostasis is restored? (A) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The frontal cortex detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (B) Rapid breathing increases blood CO2 levels, thereby causing the blood pH to drop. The hypothalamus detects the change and decreases stimulation of the rib muscles and the diaphragm, thereby reducing the breathing rate. (C) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The hypothalamus detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (D) Rapid breathing increases blood CO2 levels, thereby causing the blood pH to drop. The medulla oblongata detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate. (E) Rapid breathing decreases blood CO2 levels, thereby raising blood pH. The medulla oblongata detects the change and reduces stimulation of the rib muscles and the diaphragm, thereby decreasing the breathing rate.

14. Meiosis increases genetic variation through independent assortment and crossing over. In which stage of meiosis does crossing over occur?
(A) prophase I
(B) prophase II
(C) metaphase I
(D) metaphase II
(E) anaphase I

私人筆記 (共 1 筆)

相關試題

相關試卷