Awimboye

1) What is pupillary reflex and why does it occur? It is a circumscribed instance of cell division necessary for sexualityual reproduction. Meiosis produces gametes and involves a decrement in the amount of genetic material. 2) What is the relationship in the midst of gametes and a fertilized ovum? Gametes are a integrity sex cell, male or female and a zygote is some(prenominal) male and female sex cells to stir upher. 3) Explain the difference betwixt Haploid and Diploid cells. The haploid cell contains only angiotensin converting enzyme chromosome from each pair of homologic chromosomes. The diploid cell contains both(prenominal) chromosomes of each pair of homologous chromosomes. 4) Meiosis is known as reduction division 1 to 4. What does that mean? This means that tincture of iodine cell at the beginning 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 i s 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 homologous chromosomes lines up side by side. In metaphase I, the pairs line up at the equator of the cell and pergola fibres attach to the centromere of each homologous chromosome.

In anaphase I, the homologous chromosomes separate and move to the antonym poles of the cell. The chromosome weigh is reduced from 2n to n. In telophase I, the homologous chromosomes begin to uncoil and the spike fibres disappear. Cytokinesis takes pla ce and two cells form, both of which are hap! loid cells. In prophase II, the nuclear membrane dissolves and the spindle fibres begin to form. In metaphase II, the chromosomes set along the equatorial plate. The chromatids remain pinned together by the centromere. In anaphase II, the chromatids that were held by the centromere break apart and move to the opposite poles. This stage ends when the nuclear membrane begins to form around the psyche chromatids. In telophase II, nuclear division and the division of...If you want to get a just essay, order it on our website: OrderCustomPaper.com

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