Gamete

The DNA provides instructions for the formation of proteins and as a result, genes are the main element responsible for the different traits we acquire as we mature. Genes are contained in chromosomes. There are 46 chromosomes in each cell (bar the gametes) and each chromosome contains a single long strand of DNA with thousands of genes and millions of nitrogenous base pairs1. For this report I will be focusing on the genetics of height whilst examining a sample of 351 students. Height is an…

The reconstruction of gametes in genetic engineering would result in a permanent change in the organism, as well as for future generations (Zimmer). Should there be a negative effect from these changes, this problem could then be passed on. In addition, tampering with one’s genetic…

relatives. Based on this rule Bateman introduced the theory of parental investment, which states that due to unequal investment in producing offspring; female investment is more due to longer gestation period while sperms are cheaper than female gametes. As a result males are fundamentally promiscuous and females are fundamentally selective (Bateman, 1948). The major drawback of this study is that data gathered from pre-industrial and non-western societies do not fit this theory; reason could be…

Mitosis takes place in most body cells (somatic cells) and has an important role in tissue repair, growth and development hence genetic make-up must be the same for each cell. In contrast, meiosis only occurs in gonads (sex cells) and forms gametes for sexual reproduction, which requires genetic variability and only half the genetic material. The basic series of occurrences in mitosis are similar to that of those in meiosis. They both consist of the disintegration of the nucleus membrane, the…

In the cell cycle, there are many phases. These are always monitored for being properly functioning. For example, if a DNA strand is missing, it will be noticed in the process. This is what is called the NORMAL cell cycle. In the CANCER cell cycle however, things are a bit different. All cells go through a cycle, from the G0, to the M phase (mitosis). The initial phase, G0, is where cells “rest”, maintaining normal, non-division related functions. Cancer cells usually cannot or do not enter G0,…

Why is biodiversity important to an ecosystem? Why is it so important that we have different species of animals living together? It is extremely important for different species to be living together, because they all rely on one another for survival. Including us humans, we rely on other species to survive. We don’t just rely on other species for survival, but evolution has driven us to evolve to adapt and live longer. In an ecosystem, there are habitats. In a habitat, there are populations…

such as cloning. First of all, what is cloning? Cloning is defined as a cell, group of cells, or organism that is produced asexually from and is genetically identical to a single ancestor. The cells of an individual plant or animal, except for the gametes and some cells of the immune system, are clones because they all descend from a single fertilized cell and are genetically identical. Other than the scientific level, cloning has been a controversial topic on both ethics and morality, raising…

Unknown Organism Report I have identified my Unknown Organism #1 as Escherichia coli, or E. coli. My Unknown Organism is an anaerobic gram-negative, unicellular eubacteria. It belongs to the genus Escherichia, which is named after Theodor Escherich, a German pediatrician. E. coli is usually found in the colon of mammals, explaining the name “coli” meaning from the colon. It’s classified in the order of enterobacteriales, and the family of enterobacteriaceae. It is the most abundant bacteria in…

To me, life begins at validity and not at conception. I am a Christian and a science student and I support abortion. My support for abortion stems out of many reasons which include individual’s right, especially women’s moral right. In addition, it preserves the woman’s life in case the woman’s life is in jeopardy. Also, abortion prevents severely malformed babies from being born and suffer. Abortion is vital for gender equality and population control. Abortion helps science to research…

Abortion is inhumane murder that should be punished by law. Since the Supreme Court case ruling of Roe vs. Wade in 1973, millions of babies nation wide have been unjustly killed. "Over 40 years later, Americans are still standing by this decision - with 7 in 10 Americans believing Roe v. Wade should remain the law of the land."(planned parenthood action) Taking any life because of a mistake is not morally sound. Nobody should be able to chose someone else's life or death regardless of the…