Meiosis

G1, S and G2 stages. The last important instrument of cell cycle is meiosis, it is a type of sexual reproduction the eukaryotic cell can causes, after the replication of the DNA, the number of chromosomes to reduce from a diploid to an haploid set of chromosomes by separation done from homologous chromosomes, then they can then be placed into each of the individual daughter cells. The biggest differences between mitosis and meiosis is, mitosis only cause one cell division, the cells are then…

For my project, I chose to make an illustration. In the picture I have a breast cancer ribbon, a pot of boiling water, a prokaryote, a chromosome, a pedigree, and a factory to represent human impact, a flower to represent photosynthesis, a food chain, an energy pyramid, an embryo, humans evolving, a biomolecules chart, and the phases of mitosis. I drew a breast cancer ribbon because we talked about different types of cancer. There are many factors that go into the diagnosis of cancer. A lot of…

Inherited traits put growth and development into action in not only individual organisms but also the evolutions of species over time. Humans wouldn’t have evolved to who we are now if it wasn’t for inherited traits. In fact all species have adapted and evolved to be unique and distinct. For example a hummingbird that has adapted to have longer bills to be able to reach inside a flower to get nectar. Hummingbirds could die out from having short bills so they evolved throughout generations. These…

It is common knowledge that while siblings may be related, that does not necessarily mean that they will look alike. Take for example, the two football players, Eli and Peyton Manning, one might wonder how two brothers do not really resemble one another and how that might be. The answer however is pretty simple; it is all genetics. Upon taking a closer look, it will be easy to see why this happens. Since both brothers came from the same parents, those parents both have distinct traits…

Hello, my name is Samuel the sperm. I will be taking you on a journey today, from how I became a sperm all the way until I make my grand exit. We will start with the process of meiosis, which is how I got to become a spermatozoon. Like any good journey, we have to have a setting. In this instance, we are in the testes, the male reproductive organ that produces sperm. The process of becoming a spermatozoon all starts with a process called interphase. During this time, chromosomal DNA is being…

themselves. There are two types of reproduction, meiosis and mitosis. Meiosis is what most of us think about when considering reproduction, it is the process of sexual reproduction. There are several stages of meiosis, all with the cumulative goal of creating haploid gametes from the diploid cells. In laymen terms, the genetic material from the egg and sperm are combined to create daughter cells with a complete complement of chromosomes. The first stage of meiosis is called Interphase. This is…

Chase Ochoa Biological Anthopology 1. Biological Anthropology, as a science, has had an enormous impact on the field of Human Anatomy. It’s given us insight into the history of human development, from where we’ve come to where we are now. Those within the science have researched mankind’s origins through the use of what was left behind: Remains of our ancestors, and the ancestors that came before we could even define ourselves as Homo Sapiens Sapiens. 2. This statement is true in numerous…

B. The chromosomes fail to separate when a nondisjunction occurs. This process usually occurs during meiosis I or Meiosis II. As a result, they remain adjunct as they should after meiosis. An extra chromosome or a missing chromosome in the gamete is cause by the nondisjunction. C. Meiosis has several aspect of the process to ensure success. The spindle checkpoint is an important aspect of the process to look at. The spindle checkpoint could have…

In the four-week long experiment conducted in the Bio 13 Lab, we were able to conduct a genetic analysis of the yeast S. cerevisiae, particularly investigating the inheritance and linkage of three genes: HIS4, LEU2, and LYS2. In week one, a suspension of spores was received and aliquots of the suspension were plates onto two YPD plates. After a week of yeast growth, haploid spore clones were carefully picked from the plates by sterile toothpicks and used to make patches on a new YPD plate, the…

into 23 pairs. 22 pairs of chromosomes are similar in both males and females which are commonly known as autosomes. However, the 22nd chromosomes (X and Y) are different as these are the sex chromosomes. The human cell can divide in two ways: Meiosis, in which the number of chromosomes is halved, producing four gametes. This type of cell division is required for the production of egg and sperm cells for sexual reproduction. The other type of cell division is Mitosis which occurs when more…