Padlet summarazing by https://padlet.com/karencaiza3006/mkvc19p3wgs9aath Hecho con una sensibilidad a flor de piel en-us 2021-10-11 14:52:29 UTC 2021-10-29 17:42:32 UTC hello@padlet.com Sexual Reproduction karencaiza3006 https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1807936911
  • Sexual reproduction is characterized by the fertilization of a female gamete by a male gamete to form an offspring that is genetically different from both the parents.
  • Fertilization during sexual reproduction can be either internal or external. During internal fertilization, the male and female gametes fuse inside the body of the female organism.
  • Sexual reproduction is the driving force for speciation where new species are formed from the existing ones as new changes are introduced into the population via sexual reproduction.
  • Sexual reproduction occurs by a series of mitotic and meiotic divisions.
  • Meiosis produces haploid chromosomes during sexual reproduction.
  • Organisms reproducing sexually have specialized reproductive organs.
  • Sexual reproduction is important as it brings genetic variation, which allows the evolution to proceed.
  • Examples of sexual reproduction are seen in higher organisms like humans and other mammals, and plants.
  • Lion,Flowers,Humans


    • Sexual reproduction is characterized by the fertilization of a female gamete by a male gamete to form an offspring that is genetically different from both the 
    ]]>     2021-10-11 15:01:28 UTC https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1807936911     Asexual reproduction karencaiza3006 https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1807955364
  • Asexual reproduction is considered a more primitive mode of reproduction as it mostly occurs in primitive living beings like bacteria and fungi.
  • During asexual reproduction, mitosis occurs where the genetic material in the parent cell is doubled before dividing it into two equal halves.
  • The process of asexual reproduction is rapid, which is useful for organisms whose strategy to survive is to reproduce rapidly.
  • Asexual reproduction is a uni-parental process that can occur within a single organism, and thus no mates are required for the process.
  • During fission, the parent cell divides into two genetically identical daughter cells and occurs mostly in unicellular organisms.
  • Gametes are not involved in asexual reproduction.
  • Asexual reproduction is important as it allows the continuity of genetic information through different generations.
  • Examples of asexual reproduction are observed in bacteria, most fungi, and some vertebrates like lizards.
  • Ameba parasits,Start



    • The process of asexual reproduction is rapid, which is useful for organisms whose strategy to survive is to reproduce rapidly.


    ]]>     2021-10-11 15:07:24 UTC https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1807955364     Celullar Reproduction karencaiza3006 https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1820166223
  • Unicellula beings for reproduction and the perpetuation of species.
  • Instead, for multicelllar organisms, it is a cyclid process destined to cell production,all of them identical to each other, and can be speciaalized and differentiated inside the individual.
  • Cellular division is done through the cellular cycle in wich materials needed for a new cell are produced from mother cell.
  • At the same time, each  cell can divide itself again , wich means that a cellular division cylcle is established.
  • the cell spends most of its life on this phase (it can last hours or months.
  • It is produuced in three sub-stages:G1, or growing; S, or synthesis and G2, when the cell is ready for cellular division.
  • G1:This stages is characterized for being gennetically active.DNA ois transcribed and translate, creating the necessary proteins.
  • S phase: The heritage material is duplicated. The chrosomes changes from having a chromatid having two.
  • For example, cells are constantly duplicating so that our nails and hair keep growing.
  • Celula Eukaryota, Prokaryota


    • Unicellula beings for reproduction and the perpetuation of species.
    ]]>     2021-10-15 17:46:54 UTC https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1820166223     Mitosis karencaiza3006 https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1820196404
  • In a unicellular organism, the purpose of mitosis is to proliferate asa species. In a multicellular organism, the purpose can be to grow during development.
  • Two diploid cells with identical genetic information.
  • Mitosis is performed by unicellular and multicellular eukaryotes.Bacteria have their own version of mitosis
  • This is distinct from meiosis as bacteria typically have one circular chromosome,which is not contained within a nucleus, like eukaryotic chromosomes.
  • The process can take over 10 hours for mammalian cells in culture [2], budding yeast can take ~80 minutes to complete a cell cycle [3], whilst bacteria can divide every 20 minutes.
  • Mitosis is the Greek word for thread, after the thread-like chromosomes that can be seen under the microscope
  • Walther Flemming in his 1882 work “Cell substance, nucleus and cell division.
  • Chromosomes
    • ]]>     2021-10-15 18:04:50 UTC https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1820196404     Meiosis karencaiza3006 https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1820211764
  • To create gametes with only one copy of the organism’s genetic information, in preparation for sexual reproduction.
  • Meiosis create opportunity for genetic diversity in the daughter cells. This is the raw substrate for evolution.
  • Four haploid cells with different genetic information.
  •  Archaea and bacteria do not do this, so it might be tempting to think that unicellularorganisms do not sexually reproduce.
  • Has various timescales in different organisms, which can be affected by several factors including temperature and environment of the organism.
  • The process lasts 6 hours in yeast but can last more than 40 years in human females, due to a developmental hold at prophase I, until ovulation.
  • Meiosis means a “lessening” in Greek. This refers to the outcome of meiosis, where the genetic information in each new cell is halved.
  • examples are 1-2 days in male fruit flies and ~ 24 days in human males. [1]
    • ]]>     2021-10-15 18:14:45 UTC https://padlet.com/karencaiza3006/mkvc19p3wgs9aath/wish/1820211764