1. The figure below shows a phase of mitosis. Which cell structures are indicate
ID: 277238 • Letter: 1
Question
1. The figure below shows a phase of mitosis. Which cell structures are indicated by the letter X? Chromosomes Centrioles Kinetochore microtubules. Centrosomes Centromeres 2. The products of mitosis are two genetically identical cells. four nuclei containing half as much DNA as the parent nucleus. four genetically identical nuclei. two genetically identical nuclei. one nucleus containing twice as much DNA as the parent nucleus. 3. Starting with a fertilized egg (i.e., a zygote), a series of five mitotic cell divisions would produce an early embryo with how many cells? 8. 64 16. 32 4.Explanation / Answer
1.) Kinetochore microtubule.It is the structure of spindle fibre attatched to the kinetochore.Spindle fibre is basically a microtubule.During metaphase chromosomes arrange on the metaphasic plate and are attatched to the spindle fibre which helps in pulling them towards their respective pole in anaphase.
2.) Two genetically identical cells.Mitosis is an equational division and takes place in somatic cells.
3.) The answer is 32. As 2n where n is the number of division.
4.) 18 chromosome because here it is written 18 pair of sister chromatid which mean 36 sister chromatid so chromosome will be 18 as one chromosome will have two sister chromatid.
5) 4 chromosome as prophase, metaphase , anaphase and telophase comes under M phase.The number gets doubled when in S phase.
6) 28 centromere as one chromosome has one centromere.
7.) Cytokinesis
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