Meiosis

and neither carries the gene deletion. Polymorphic simple-sequence repeat analyses at 15 loci on chromosome 1 and at 16 loci on other chromosomes confirmed parentage and revealed that a de novo mutation prior to maternal meiosis I, followed by nondisjunction in maternal meiosis II, resulted in an oocyte with two copies of the de novo (an alteration in a gene that is present for the first time in one family member as a result of a mutation in a germ cell) mutant allele.” Therefore during the…

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 splitting of genetic material, subsequent cell division…

Meiosis- A type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores. I have heard a lot about mitosis but not enough about meiosis. 5. Heterozygous-having dissimilar pairs of genes for any hereditary characteristic.Heterozygosity occurs when an individual has…

1) What does it mean when we say that humans are biocultural organisms? Describe what that term means and use an example to illustrate your point. Humans are biocultural organisms due to our ability to adapt and create culture. Humans all have the same make up of internal organs and external limbs but that doesn’t make us all the same. Culture shapes the world and how it has been brought up since the beginning. We are all very different in our own ways, weather it is color of skin, height,…

Background Turner’s syndrome is a genetic disorder that occurs in 1 in every 2,500 female births. Though it occurs in about 3% of fetuses, 99% of these fetuses are spontaneously aborted[1]. Turner’s syndrome can be defined as a combination of phenotypes with varying expressivity along with the complete or partial loss of an X sex chromosome[2]. Symptoms of Turner’s syndrome include, but aren’t limited to short stature, glucose intolerance, broad chest and widely spread nipples, amenorrhea,…

involves a single cell organisms. With the use of mitosis it produces genetically identical organism of the parent cell. However, with meiosis it is a form of sexually reproduction because it takes two completely different parent cells in order to produce offspring. Which, is completely different from mitosis which only takes one single cell organism. Also, by using meiosis the offspring will not be genetically identical to that on the parent cells. The reason it will not be the same as the…

effective organism to study. In Drosophila melanogaster, the males do not go through crossing over during meiosis, which allows certain genes to be easier to track since only parental genotypes are passed from female parent to their male offspring. A crossover is the basis of genetic information exchange, which occurs when homologous chromosomes pair up on the basis of sequence similarity in meiosis I and chiasmata is formed between two chromatids (Hochwagen 2008). Closely…

I have interacted with Nick Munene, as his Biology and class teacher, Catholic Action (CA) patron and tennis coach. He is one of the most outstanding and exceptional students I have encountered in my career as an educator. My interaction with him goes beyond high school; I have also seen him come back to his school as a peer and assistant teacher to give back to the school that “shaped me to be the person I am today”, as he is often heard saying. Nick is a thinker, a problem solver and a…

Cell Cycle and Mitosis Danny Rivas George Nassif Vuong Troung Josh Richardson University of California, Merced Biology 001 Laboratory Section 5 Ms. Ye Zhu February 4, 2015 Cell Cycle and Mitosis Within the cell cycle, there are four distinct phases which prepare the cell for separation as well as an additional phase where the cell can exit the cell cycle. The G1 phase is the first phase in which the cell commits to divide and grows in preparation. The S phase replicates each chromosome to…

Learning the science between babies is crucial for an educator to know. This concept is sort of compared to knowing your opponent before you play them in a game. This gives you different advantage points on how to handle them. Genetics, Prenatal care, and birth are the main concepts that you need to know about the history of a baby. Genetics is the disorders the child could have; usually it runs in the family. Prenatal Development is what the mother needs to know while she is pregnant; this…