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1) What is pupillary reflex and wherefore does it occur? It is a peculiar(a) instance of cell department necessary for stirualityual reproduction. Meiosis produces gametes and involves a reducing in the fixate along of genetic material. 2) What is the relationship in the midst of gametes and a fertilized ovum? Gametes are a atomic way out 53 sex cell, male or female and a zygote is some(prenominal) male and female sex cells together. 3) Explain the difference in the midst of Haploid and Diploid cells. The haploidic cell contains only angiotensin converting enzyme chromosome from exclusively pair of homologic chromosomes. The diploid cell contains two chromosomes of each pair of homologic chromosomes. 4) Meiosis is known as reduction persona 1 to 4. What does that mean? This means that iodine cell at the commencement exercise of meiosis becomes 4 cells in one case meiosis is completed. 5) What are the differences between the 2 phases of Meiosis? Meiosis I, which is also known as reduction division, is where 2n reduces to n. Meiosis II is where ii meiotic divisions occur. 6) Describe the 4 phases of each stage. In prophase I, each pair of homological chromosomes lines up side by side. In metaphase I, the pairs line up at the equator of the cell and pergola fibres grab to the centromere of each homologous chromosome.

In anaphase I, the homologous chromosomes divert and move to the opposite word poles of the cell. The chromosome number is reduced from 2n to n. In telophase I, the homologous chromosomes begin to uncoil and the arbor fibres disappear. Cytokinesis takes place and two cells form, both(prenominal) of which are haploid cells. In prophase II, the nuclear tissue layer dissolves and the mandrel fibres begin to form. In metaphase II, the chromosomes queue along the equatorial plate. The chromatids extend pinned together by the centromere. In anaphase II, the chromatids that were held by the centromere stifle apart and move to the opposite poles. This stage ends when the nuclear membrane begins to form around the individual chromatids. In telophase II, nuclear division and the division of...If you want to get a just essay, auberge it on our website: Orderessay

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