https://padlet.com/eibanez9/vbjaw6zozm2dflbh Years, names of the scientists who were involved and in general their contribution. en-us 2023-07-03 20:23:21 UTC 2023-07-03 20:52:59 UTC hello@padlet.com eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637365961 Friedrich Miescher discovers an acidic substance in the cell nucleus and calls it "nuclein", which would later be known as deoxyribonucleic acid (DNA).]]> 2023-07-03 20:29:48 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637365961 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637367557 Oswald Avery, Colin MacLeod, and Maclyn McCarty show that DNA is the genetic material responsible for heredity.]]> 2023-07-03 20:35:19 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637367557 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637367888 Erwin Chargaff notes that the amount of adenine is equal to the amount of thymine, and the amount of guanine is equal to the amount of cytosine in DNA. This is known as Chargaff's rules.]]> 2023-07-03 20:36:50 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637367888 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637368247 Alfred Hershey and Martha Chase carry out experiments with bacteriophages and show that DNA is the genetic material passed down through generations.]]> 2023-07-03 20:38:29 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637368247 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637368710 James Watson and Francis Crick propose the structure of DNA in the form of a double helix. His model was based on X-ray diffraction data from Rosalind Franklin and Raymond Gosling.]]> 2023-07-03 20:40:36 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637368710 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637369066 The Human Genome Project begins, with the aim of sequencing the entire human genome.]]> 2023-07-03 20:41:56 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637369066 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637369338 The Human Genome Project is completed, having sequenced and mapped approximately 99% of the human genome.]]> 2023-07-03 20:43:02 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637369338 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637370292 DNA stores genetic information and is replicated for transmission to daughter cells, while RNA is involved in protein synthesis and transfer of genetic information from DNA to ribosomes. Both nucleic acids are essential for the functioning and heredity of living organisms.]]> 2023-07-03 20:47:25 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637370292 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637371042 Physical and chemical properties. DNA is a long polymer made up of repeating units, nucleotides. A double strand of DNA is 22 to 26 Ångströms (2.2 to 2.6 nanometers) wide, and a unit (a nucleotide) is 3.3 Å (0.33 nm) long.
DNA has the function of “storing information”. That is, it contains the instructions that determine the shape and characteristics of an organism and its functions. In addition, through DNA these characteristics are transmitted to descendants during reproduction, both sexual and asexual.]]> 2023-07-03 20:50:34 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637371042 eibanez9 https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637371572 RNA is the key intermediary between DNA and protein synthesis. During transcription, a strand of DNA is copied into a messenger RNA (mRNA) molecule. Then, during translation, the mRNA is read by ribosomes and a chain of amino acids is synthesized to form a protein.]]> 2023-07-03 20:52:59 UTC https://padlet.com/eibanez9/vbjaw6zozm2dflbh/wish/2637371572