Comprehensive Review: Chapter 8,9 and 10 Total Points-5 1. Which of the followin

Question

Comprehensive Review: Chapter 8,9 and 10 Total Points-5 1. Which of the following statements regarding mitosis and meiosis is true? A) Sister chromatids separate during anaphase of mitosis and anaphase II of meiosis B) Mitosis takes place in your gametes, whereas meiosis takes p C) In metaphase of mitosis and metaphase l of meiosis, homologous chromosomes separate D) Independent orientation occurs during metaphase of mitosis and metaphase Il of meiosis. 2. At the start of mitotic anaphase, A) the centromeres of each chromosome come apart. B) the chromatid DNA replicates. C) nuclear envelopes begin to form around the chromosomes D) equivalent and complete collections of chromosomes have reached the two poles. 3. Which of the following statements regarding the differences between mitosis and meiosis is false? A) In meiosis four daughter B) Cells produced by mitosis are diploid, whereas cells produced by meiosis are haploid C] In mitosis cytokinesis occurs once, whereas in meiosis cytokinesis occurs twice D) Crossing over is a phenomenon that creates genetic diversity during mitosis. r cells are produced, whereas in mitosis two daughter cells are produced 4. Which of the following statements correctly describes the behavior of a tetr meiosis? ad during anaphase I of A) It goes intact to one pole of the dividing cel B) It splits into two pairs of sister chromatids, and one pair goes to each pole of the dividing cell. )It splits into two pairs of homologous, nonsister chromatids, and one pair goes to each pole of the dividing cell. D) it splits into four chromosomes, which distribute in random pairs to the two poles of the dividing cell the offspring of a cross between a red-flowered plant and a white-flowered plant have pink to the allele for white flowers. flowers. This means that the allele for red flowers is A) dominant B) codominant C) incompletely dominant D) Recessive 6. Justin has type A blood and his wife Brittany has type B blood. Justin's parents both have type AB blood, and Brittany's parents also both have type AB blood. What are the chances that Justin and Brittany's son Theodore has type A blood? A)100% B)75% C)25% D)096 7. You ar X chromosomes. Which of the following is the A) a skin cell from a human female e looking at an unknown cell under a microscope that has 22 chromosomes plus two

Explanation / Answer

1. sister chromatids begin to seperate at the onset of anaphase, when seperase begin to break the cohesin that binds them together.

2. At the start of mitotic anaphase chromosomes condenses to form a nuclear envolepe around it.

3. No crossing over occurs in mitsosis while in meiosis mixing of chromosomes can occur which causes genetic diversity.

4. In anaphase 1, the homologous chromosomes are pulled apart and moves to opposite poles. Sister chromatids are not seperated until meiosis 11. The fused kinetochore formed during meiosis 1 ensures that eacg spindle microtube that binds to the tetrad will attach to both sister chromatid.

10. Transription is the process of coding for RNA along genetic sequence of DNA. In prokaryotic cells it occurs along the circular DNA lying in nucleoid region within cell.

11. Th transfer of genetic material from DNA to RNA is called as Translation.

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