Question

Quession 14 Which statement about mitosis is true? Select one a. DNA replication is completed in prophase. b. The chromosome number in the resulting cells is halved c. Two genetically identical daughter cells are formed. d Crossing over occurs during prophase e. It consists of two nuclear divisions. Quession 15 How does a nucleus in G2 difler from a nucleus in G17 Select one a. DNA synthesis occurs only in G1 phase. b Inactive cells are arrested only in G2 phase. c. The G2 nucleus has double the amount of DNA as the G1 nucleus d. During G2 the cell prepares for S phase. e. None of the above: there is no difference in the sucleus between G1 and G2 Quesion 16 The DNA of a eukaryotic cell is Select one a. single-stranded and circular b. single-stranded and linear e double-stranded and circular. d. double-stranded and linear Question 17 At the milestone that defines anaphase, the chromosomes Select one a. come together b. separate c are at opposite poles d cross over e. line up Quession 18 At the milestone that defines telophase, the chromosomes Select one a. line up b. are at opposite poles come together 4. cross over e separate Quesion 19 Refer to the figure showing a phase of mitosis Which cell structures are indicated by the two leader lines? Select one a. chromatids b. centrioles c. centromeres d. chromsomes e. kinetochore microtubules Question 20

Answer 1

Ans. 14

During mitosis no crossing over occur and also chromosome number remain same. Identical daughter cells are formed from parent cells. Option C is correct.

Ans. 15

Option C is correct because in G2 cell DNA is replicated and double amount of DNA is present as compared to G1 cell.

Ans. 16

In eukaryotic cells DNA is present in double stranded form as genetic material and in linear form. DNA is tightly packed into nucleus with the help of Histones. Option D is correct.

Ans.17

During Anaphase chromosomes move apart towards the poles. Option B is correct.

Ans. 18

In telophase newly formed chromosomes are moved at poles and are forming nucleus of daughter cells. Option B is correct.