Please correct the mistakes if they are existed. 23. The skin cells of ring-tail

Question

Please correct the mistakes if they are existed.

23. The skin cells of ring-tailed lemurs have 56 chromosomes. How many chromosomes are present in the gametes of species? 14 B.) 28 56 25 D. 112 24. Sister chromatids are separated during: A. mitosis B, meiosis I and mitosis. eiosis II and mitosis. meiosis L E. meiosis IL. 25. The CORRECT sequence of steps in the eukaryotic cell cycle is: A)Gi S phase G2-mitosis cytokinesis. Go ? S phase ? G1 ? S phase C. Go S phase Gi Gcytokinesis mitosis. D. Go- S phase- GiS phase Gcytokinesis-mitosis E. G1 S phase G cytokinesis-mitosis. ? G2 ? mitosis+ cytokinesis. 26. A skin cell in G2 of interphase has as much DNA as it had in G. half B twice exactly D. one-fourth E. four times 27. Which of the following has the MOST similarity in nucleotide sequence? homologous chromosomes nonhomologous chromosomes C. sister chromatids D. maternal and paternal copies of the same chromosome 28. Homologous pairs of chromosomes separate during: A. mitosis. B. meiosis I and mitosis. meiosis II and mitosis. meiosisL E. meiosis II A. recombination between non-sister chromatids of homologous chromosomes ue B. recombination between sister chromatids of homologous chromosomes bination between non-sister chromatids of nonhomologous chromosomes recombination between sister chromatids of nonhomologous chromosomes 30. During what step in meiosis do the daughter cells become haploid? A. metaphase ? B. anaphase I anaphase II ?prophase II 31. Somatic (body) cells are continuously replicating DNA and then dividing. Which of the following is NOT a stage in their cellular cycle? A. Interphase B Mitosis (C Cytokinesis D. Meiosis

Explanation / Answer

23 Gametes are haploid and contain half no. If chromosome than diploids. Hence Option B is correct.

24. Sister chromatids are separated meiosis II in germ cells to form gametes. And alos in mitosis during anaphase. Hence option C is correct.

25. Cell cycle completed in two main events -

Karyokinesis- cell eneter un G1 phase in which proteins for DNA replication are synthesized. Them sSphase in which replication occur than G2 phase in which cells prepare them for cell divison. Then M phase in which cells are devided.

Then by cytokinesis two separate cells are formed. Option A is correct.

26.Cell will having twice the DNA in G2 than G1 because DNA replicated in S phase. Option B is correct.

27. Homologous chromosomes have similar genes locted on same loci. Hence having same sequence. Option B is correct.

28. Homologous chromosomes are paired to form tetrad in prophase-1 and separated in anaphase 1 of meiosis. OptionD is correct

29. Recombination between non-sister chromatids of homologous chromosomes occur called crossing over. Option B is correct.

30. Daughter cells become haploid in anphase - 2 hence meiosis 2. Option C is correct

31. Meiosis only occur in germ cells hence option D is correct.

Related Questions

Navigate

• Browse (All)
• Browse P
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.