6/21/2018 Take Test: Assignment 1 (Chromosomes & Cellular Reproduction) QUESTION

Question

6/21/2018 Take Test: Assignment 1 (Chromosomes & Cellular Reproduction) QUESTION 12 Question Completion Status Diploid cells from donkeys (Equus africanus asinus) have 62 chromosomes How many DNA molecules would expect to see in a cell that is in: (a) Prophase of mitosis? mark) (1 (1 (b) Prophase ll of meiosis? mark) (1 (c) Anaphase I of meiosis? mark) (d) G1 phase? (1 mark) QUESTION 13 3 points Save Answer A cell from a melon (Cucumis melo) (2n 24) has just completed the S phase of the cell cycle and has begun the G2 phase. Please answer the following questions Click Save and Submit to save and submit, Click Save All Answers to save all answers

Explanation / Answer

1During the stages of meiosis and mitosis, the no. of chromosomes changes by doubling during anaphase by sepration of sister chromatids. During meiosis-1 the chromosome number does not change until after telophase -1 is completed.

12. 2n=62 a.No of DNA molecules in prophase of mitosis- 124 b. Prophase-|| of meiosis- 62. c. Anaphase-| of meiosis- 124. d. G1 phase- 62.

13. 2n=24 a. No. of telomeres- 24×4=96 b. No.of chromatids- 48. c. No of chromosomes- 24

14. 2n=208. a. No. of chromosomes in Anaphase of mitosis- 208×2= 416.

b. Anaphase-|| - 208 c. Telophase-| - 208 d. Telophase || - 208

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