Which of the following facts relates to Chargaffs rule?
A. DNA contains a pentose sugar, nitro...
Biology, 03.04.2020 01:25 lindsaymiklavic04
Which of the following facts relates to Chargaffs rule?
A. DNA contains a pentose sugar, nitrogenous bases, and a phosphate group
B. DNA is a molecule in structure
C. DNA contains thymine, cytosine, adenine, and guanine
D. Cytosine and guanine appear in equal proportions in DNA
Answers: 3
Biology, 21.06.2019 18:30, mayamabjishovrvq9
Drag each label to the correct location on the image. each label can be used more than once. a scientist introduced mutations in a gene sequence isolated from bacteria. study the sequence, and identify the steps where the mutations may affect the formation of proteins. in the sequence, black letters stand for protein coding regions and red letters stand for noncoding regions. protein will not be changed. protein may be changed. attcgtgttc atcgtgttc atcgtattc attcgtattc
Answers: 1
Biology, 21.06.2019 22:30, lillitzy8865
How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.
Answers: 2
Biology, 22.06.2019 02:00, badpotterchris
How is ribosomal rna useful as a molecular clock? a. a large portion of the dna ring is not vital to structure or function, allowing it to accumulate neutral mutations. b. its rate of mutation increases over time as organisms continue to evolve and differentiate from each other. c. a slow mutation rate makes it useful for determining evolutionary relationships between ancient species. d. it is only found in select organisms, making it easier to compare relationships between species that have it.
Answers: 1
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