Meiosis; Asexual and Sexual Reproduction; History of Genetics; - Assignment Example

Comments (1) Cite this document
This paper aims to shortly describe such notions as Meiosis; Asexual and Sexual Reproduction; History of Genetics; Mendelian Inheritance; Punnett Square; Genetic Disorder and Transformation. It starts with the Meiosis also known as reduction division is a type of cell division where the cells divide to produce cells containing half the number of chromosomes…
Download full paperFile format: .doc, available for editing
GRAB THE BEST PAPER94.1% of users find it useful
Meiosis; Asexual and Sexual Reproduction; History of Genetics;
Read TextPreview

Extract of sample
"Meiosis; Asexual and Sexual Reproduction; History of Genetics;"

Download file to see previous pages Meiosis
The process of meiosis is divided into two segments; Meiosis I and Meiosis II. Meiosis I is similar to mitosis and consists of Prophase I, Metaphase I, Anaphase I and Telophase I. When the first division comes to an end, there is the formation of two daughter cells and each contains 23 chromosomes and has undergone crossing over. Crossing over is the exchange of genetic material between two chromosomes. Meiosis II consists of the same stages. However the end stage produces four daughter cells each having a different genetic make-up. All four cells convert into sperms in males while in females only one matures as egg or ovum.
As mentioned earlier, meiosis plays a very important role in sexual reproduction by causing genetic variations in the offspring. It reduces the number of chromosomes in the parent cells which are egg and sperm, collectively called as gametes or sex cells. Because of this reduction each cell contains only one set each. A process of independent assortment takes place where each allele gets different chromosome varying at any specific locus. Secondly, it also allows crossing-over which results in genetic mix-up between the two parental chromosomes and we see genetic variations in the offspring.
Asexual and Sexual Reproduction
Asexual reproduction is defined as a type of reproduction where the organism produces an exact copy of itself without any genetic variation or involvement of any other individual. Different organisms reproduce asexually in various manners. For instance bacteria reproduce by binary fission and the yeast by budding. Fragmentation, spore formation and vegetative reproduction are some other forms of asexual reproduction. Sexual reproduction, on the other hand, is a process where two parent organisms create an offspring that has a combination of genetic material from both the parents. Most of the animals and plants reproduce sexually. However there are certain organisms that reproduce both sexually and asexually like star fish, sea anemones, slime molds and aphids. Organisms that reproduce asexually can create descendents in large numbers but since the offspring have very few DNA variations they are all equally vulnerable to diseases. However sexually reproducing organisms undergo genetic variations and the species are stronger in withstanding the harsh environment. The sexual organisms also produce lesser amount of offspring. Because of this reason the organisms that reproduce through both ways, switch towards sexual reproduction under unfavorable conditions. This helps them in acquiring the genetic variations that facilitate them in adapting to the surroundings. However sexual reproduction is an energy requiring process in contrast to asexual reproduction which requires minimal amount of energy. To explain the extensive use of sexual reproduction by organisms, George C. Williams used the example of lottery tickets. Sexual reproduction is like buying few tickets of different numbers which increases the chance of winning. While asexual is like buying loads of tickets with same numbers. This theory is not considered now because of newfound evidences. History of Genetics History of genetics can be traced back to 1866 when the work of Gregor Johann Mendel on pea was published and his theory was recognized as Mendelian Inheritance. He was the first to study the genetic inheritance patterns in the peas and the fact that they followed a certain rule. After this breakthrough in the world of genetics different such theories came into sight. One considerable work was done in 1900 by Hugo de Varies, Carl Correns and Erich von Tschermak and was ...Download file to see next pagesRead More
Cite this document
  • APA
  • MLA
(“Meiosis; Asexual and Sexual Reproduction; History of Genetics; Assignment”, n.d.)
Retrieved from https://studentshare.org/biology/1440265-meiosis-asexual-and-sexual-reproduction-history-of-genetics
(Meiosis; Asexual and Sexual Reproduction; History of Genetics; Assignment)
“Meiosis; Asexual and Sexual Reproduction; History of Genetics; Assignment”, n.d. https://studentshare.org/biology/1440265-meiosis-asexual-and-sexual-reproduction-history-of-genetics.
  • Cited: 0 times
Comments (1)
Click to create a comment or rate a document
gradyerich added comment 22 days ago
Student rated this paper as
I never thought 2000 words essay could be written in such a free manner. I loved the style of this essay. Will definitely use it for my own work!
[Student Name] [Instructor’s Name] [Course Code] [Date] Genetics The students of our class were asked to go to lab and measure height using height scale during practical 10. The whole group of student consisted of male and female students. The heights measured then were arranged into their respective groups.
6 Pages(1500 words)Assignment
Ethics, Genetics and Reproduction Philosophy
The entire gamut of the Western Civilization has always been very complicated in the sense that there never existed a unanimously and universally authenticated code of conduct that was considered perpetually sufficient to adjudicate the socially and ethically relevant issues.
6 Pages(1500 words)Essay
What are the advantages and disadvantages of asexual and sexual reproduction in animals
It involves the combination or fusion of gametes, male’s sperms cells and ova (female egg cells), during reproduction. During the mating process, eggs cell and sperm cells form zygote which is a fertilized combination of the
2 Pages(500 words)Essay
Mammalian studies suggest that “neurohypophysical oxytocin plays a role in the expulsive phase” (Blanks & Thornton, 2003) and also initiates parturition. All throughout pregnancy, progesterone plays an important role in sustaining it; however at the end of
1 Pages(250 words)Essay
Mitosis and Meiosis
Meiosis is another type of cell division which occurs in reproductive cells or germ cells only. It involves two fissions of the nucleus and gives rise to four sex cells or gametes. Each of the cells has half the number of chromosomes of the parent cell. Meiosis occurs in 2 stages, meiosis -1 and meiosis-2.
3 Pages(750 words)Assignment
Explain: Mitochondria provide energy for all cellular processes within the body. As alluded to above, mitochondria is maternally inherited, and so are the defects of mtDNA. Thousands of mutant and normal mtDNA both coexist in individuals with mtDNA
5 Pages(1250 words)Assignment
Stages of Meiosis
It can be divided into MEIOSIS I and MEIOSIS II. Following are the list of phases through which a cell undergoes during the process of meiosis. Before the
2 Pages(500 words)Assignment
Note: Assignments sent via post mail should include a Tutor-Marked Exercise Form. Explain The DNA is supposed to bond to the complementary base and these are not available in the options. The correct answer would (CCG AUU UCC UUA GCA
5 Pages(1250 words)Assignment
f a set of pairs of monozygotic twins carrying similar alleles for every gene, if they are raised in separate homes they may become different individuals. It implies that gene alleles differ across different environments.
1 Pages(250 words)Assignment
In order to find in mixture of fruit flies a true-breeding individual with normal wings it is necessary to conduct test cross analysis. To carry out this analysis flies with normal wings should be
1 Pages(250 words)Assignment
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.
Let us find you another Assignment on topic Meiosis; Asexual and Sexual Reproduction; History of Genetics; for FREE!
logo footer
Contact us:
Contact Us Now
FREE Mobile Apps:
  • StudentShare App Store
  • StudentShare Google play
  • About StudentShare
  • Testimonials
  • FAQ
  • Blog
  • Free Essays
  • New Essays
  • Essays
  • Miscellaneous
  • The Newest Essay Topics
  • Index samples by all dates
Join us:
Contact Us