DNA: The Key to Life |
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Page 12
... single cell formed by the fusion of an egg and a sperm cell . The sperm cell contributes 23 chromo- somes to the fertilized egg's 23 chromosomes . A human child in- herits from his parents ( check one ) : a . traits b . proteins for ...
... single cell formed by the fusion of an egg and a sperm cell . The sperm cell contributes 23 chromo- somes to the fertilized egg's 23 chromosomes . A human child in- herits from his parents ( check one ) : a . traits b . proteins for ...
Page 86
... single stranded ? Which is normally a double helix ? b . The four bases of DNA are GCAT . What takes the place of T in RNA ? Does the shape diagramed for this base suggest it would pair with A as T does ? In DNA , base pairs G - C and A ...
... single stranded ? Which is normally a double helix ? b . The four bases of DNA are GCAT . What takes the place of T in RNA ? Does the shape diagramed for this base suggest it would pair with A as T does ? In DNA , base pairs G - C and A ...
Page 87
... single strands , and ( 2 ) having U ( uracil ) instead of T ( thymine ) as the base that pairs with A. A third difference between the two kinds of nucleic acids is revealed by a close - up look at the atomic struc- ture of the sugars ...
... single strands , and ( 2 ) having U ( uracil ) instead of T ( thymine ) as the base that pairs with A. A third difference between the two kinds of nucleic acids is revealed by a close - up look at the atomic struc- ture of the sugars ...
Contents
THE STRUCTURE AND LANGUAGE OF DNA | 28 |
REPLICATION REPAIR | 55 |
RNAS ROLE | 82 |
Copyright | |
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Common terms and phrases
activating enzymes adenine AGTC amino acids antibiotics backbone bacteria base pairing called chain changes in DNA chemical chromosomes copy strand cytoplasm cytosine diagram DNA and protein DNA base sequence DNA double helix DNA language DNA molecules DNA repair DNA replication DNA-protein synthesis DNA-protein translation DNA's enzymes eukaryotic chromosomes free nucleotides function galactosemia genetic engineering geneticists hemoglobin hereditary defects hereditary information hereditary traits histones incomplete repressor interlocking keratin kind of molecule kinds of RNA label lactose letters ligase messenger RNA milk sugar molecules monomers mRNA mRNA triplet mutations in DNA nuclease nucleotides operon particular protein protein molecules protein production protein synthesis proteins and traits pyrimidine red blood cells regulator gene reproduction rezipping ribose ribosomal RNA RNA polymerase role rRNA Sample answer segment of DNA shape sickle cell anemia sickle cell hemoglobin specific amino acids structure thymine tion transfer RNA tRNA turn unzipping val glu viruses