Preview

Reproductin: Asexual or Sexual

Good Essays
Open Document
Open Document
502 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Reproductin: Asexual or Sexual
In a world of science, reproduction occurs constantly. Reproduction is the biological process by which new individual organisms are produced. Reproduction is a fundamental feature of all known life; each individual organism exists as the result of reproduction. During reproduction, new offspring individual organisms are produced from their parents. How reproduction works? Good question! It is said that reproduction can either be asexual or sexual.
First of all, when an organism reproduces asexually, that organism creates a genetically similar or identical copy of itself without a contribution of genetic material from another individual. For example, I would assume that the reproduction of fish is asexually. I say this because the female fish lay her ovules in the water then the male sprays them with his sperms; therefore; there are no sexual mating occurring between the male or female. On the other hand, there are evolutionary advantages that come with organisms reproducing sexually. Sexual production produces genetic diversity within an organism which reduces the chance of passing on genetic disorders. Also, it creates the ability to produce variable offspring, some of which will have improved chances of survival in changing environments
Secondly, three ways that sexual reproduction increase genetic variability includes the independent orientation of chromosomes during meiosis, crossing over during meiosis and the random fertilization. During the independent orientation and the crossing over, the genetic information gets mixed up which increases genetic diversity among the offspring. Because of both the independent orientation and the crossing over, male animals can possibly produce millions or hundreds of millions of genetically unique sperm and because of that; siblings, except for identical twins, never have exactly the same genetic information.
Lastly, two prezygotic isolating mechanisms that prevent hybridization between two species include behavioral

You May Also Find These Documents Helpful

  • Good Essays

    asexual reproduction- New cells are generated through the process of mitosis (or binary fusion in the case of bacteria). These new daughter are exactly the same as the parent cell that divided.…

    • 1309 Words
    • 6 Pages
    Good Essays
  • Good Essays

    B) the development and then regression of testes prior to sexual maturation. C) the observation that all of the offspring are haploid. D) dependence on favorable weather conditions for ovulation to occur. E) the persistence of a vestigial penis among some of the females. 200-Name two reasons for and two reasons against asexual reproduction. For: -do not waste energy finding a mate -rapid reproduction & colonization in favorable habitats -ensures gene pool is passed to next generation Against: -pathogens can decimate clonal populations -loss of genetic diversity -cannot easily rid population of harmful mutation 300-Internal vs external fertilization. Make one comparison and one contrast Comparison -both produce zygotes -both are sexual reproduction Contrasts -External-many gametes for both sexes (not just male) -Greater parental investment (internal) -invest reproductive energy differently b. Where and when does fertilization occur in humans? Oviduct/fallopian tube, ovulation 400-1. In vertebrate animals, spermatogenesis and oogenesis differ, in that A) oogenesis begins at the onset of sexual maturity, whereas spermatogenesis happens in embryonic development. B) oogenesis produces four haploid cells, whereas spermatogenesis produces only one functional spermatozoon. C)…

    • 2067 Words
    • 9 Pages
    Good Essays
  • Powerful Essays

    Chapter 46-47

    • 946 Words
    • 4 Pages

    ____ 1. Which of the following are possible advantages of asexual reproduction? a. It allows the species to endure periods of fluctuating or unstable environmental conditions. b. It enhances genetic variability in the species. c. It enables the species to colonize new regions rapidly. d. Both A and B are true. e. A, B, and C are true. 2. Why is sexual reproduction important? a. It allows animals to conserve resources and reproduce only during optimal conditions. b. The resulting diverse phenotypes may enhance survival of a population in a changing environment. c. It can result in numerous offspring in a short amount of time. d. It enables isolated animals to colonize a habitat rapidly. e. Both A…

    • 946 Words
    • 4 Pages
    Powerful Essays
  • Good Essays

    2) In asexual reproduction, one parent produces genetically identical offspring my mitosis. In sexual reproduction, two parents give rise to offspring that have unique combinations of genes inherited from the two parents.…

    • 1278 Words
    • 6 Pages
    Good Essays
  • Good Essays

    Bio 1201 Notes

    • 2497 Words
    • 10 Pages

    Each parent contributes half the genetic material * Increase the diversity of offspring * Different combinations of chromosomes * Increase the potential type of diversity * Stages of Meiosis * Prophase I * Metaphase I * Anaphase I * Telophase I * Prophase II * Interphase *…

    • 2497 Words
    • 10 Pages
    Good Essays
  • Satisfactory Essays

    Why is cloning a plant easier than cloning an animal? Use the following terms in your answer: stem cells, specific cells, differentiation.…

    • 281 Words
    • 2 Pages
    Satisfactory Essays
  • Powerful Essays

    Year 9science Notes

    • 4001 Words
    • 17 Pages

    Sexual reproduction occurs when offspring result from the fusion of a male reproductive cell and a female reproductive cell. These special reproductive cells are called gametes and they are produced in the reproductive organs of the organism.…

    • 4001 Words
    • 17 Pages
    Powerful Essays
  • Satisfactory Essays

    Biology Quiz

    • 1390 Words
    • 14 Pages

    asexual reproduction results in an organism that is identical to the parent, whereas sexual reproduction results in an organism that is not identical to either parent.…

    • 1390 Words
    • 14 Pages
    Satisfactory Essays
  • Good Essays

    The lab experiment examined meiosis and genetic diversity through the model organism, Sordaria fimicola. Meiosis is part of the sexual life cycle and occurs in all sexually reproducing organisms. It is a method of cell division that produces gametes. Meiosis has two parts: meiosis I and meiosis II. Both parts undergo the same four stages of prophase, metaphase, anaphase, and telaphase. The process begins with one single parent diploid cell (that contain homologous chromosomes) that divides into four daughter haploid cells which each contain half the number of chromosomes that the original parent cell contained. Both independent assortment and crossing over occur in meiosis I. Crossing over rearranges the DNA sequences that are then inherited and passed down to future offspring. This rearrangement, or recombination results in genetic variation within a species. The mechanisms controlling these crossover events are undefined. Recent existing evidence argues that harsh environmental pressures may lead to heritable changes in mechanisms controlling recombination. Much of this evidence has come from studies done at the Evolution Canyons in Israel.…

    • 550 Words
    • 3 Pages
    Good Essays
  • Good Essays

    Com/155 Final

    • 925 Words
    • 4 Pages

    All organisms need to reproduce for the continuation of their species. Otherwise, that species would die off. Just like animals, plants are characterized by sexual reproduction, with new organisms being formed from the union of sex cells. While it cannot be said that plants have separate sexes in the same way that animals do, they do form gametes just like animals. Two sperm cells are involved in the fertilization process with plants; one sperm cell combines with the egg cell and the other becomes the seed. In the process of fertilization with animals only one sperm fertilizes the female egg and it occurs in the fallopian tube of the female reproductive tract. Life for a new plant begins when it germinates from the seed. Part of the maturation occurs while in the embryonic stage, and the remainder occurs after birth and germination. Life for an animal begins when exiting the mother's womb or from an egg. In both cases, birth is experienced; however, with plants the process is called mitosis and with animals it is called meiosis. In plants gametes are not produced directly, they have an extra step in which meiosis produces spores.…

    • 925 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    Miss

    • 400 Words
    • 2 Pages

    Using well labelled diagrams explain how the behaviour of chromosomes during meiosis leads to variation. In this report you must explain crossing over and independent assortment (P4).…

    • 400 Words
    • 2 Pages
    Satisfactory Essays
  • Good Essays

    Sociologists explained the process of socialisation in many different ways – they have looked at all factors which could occur in such process.…

    • 863 Words
    • 4 Pages
    Good Essays
  • Satisfactory Essays

    biology

    • 461 Words
    • 4 Pages

    Process in sexual reproduction in which male and female reproductive cells join to produce a new cell.…

    • 461 Words
    • 4 Pages
    Satisfactory Essays
  • Good Essays

    Conception is the process described when the penetration of an egg cell by a sperm cell fuses to form the first cell of a new living organism. Conception normally occurs in the fallopian tubes as a result of sexual intercourse.…

    • 1842 Words
    • 8 Pages
    Good Essays
  • Good Essays

    Reproductive system: the male and female reproductive systems function is to produce sperms and egg, and as they joined together it enables them to have a child. This occurs when a male sperms meets the female egg, as these two meets together, they produce a baby.…

    • 1204 Words
    • 5 Pages
    Good Essays