Biology, 25.03.2020 20:26 evelynrrojas461
1. After examining the DNA of different organisms, which of the following did Erwin Chargaff conclude about the four bases?
a. A = T and C = G.
b. A = C = G = T.
c. A = C and G = T.
d. A + T = C + G.
Answers: 3
Biology, 21.06.2019 13:30, swaggernas
Plzz hurry im being timed during times of vigorous physical activity, muscles require a constant supply of oxygen. how does the body respond to these needs? a. breathing rate and heart rate both decrease. b. breathing rate and heart rate both increase. c. heart rate decreases, but breathing rate remains stable. d. breathing rate increases, but heart rate remains stable.
Answers: 1
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
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Biology, 22.06.2019 00:00, nicolemaefahey
Hurry which of these is true about index fossils? a) are very scarcely found b) used as guides in relative dating c) found in the youngest layer of the rock d) used as reference points in absolute dating
Answers: 2
1. After examining the DNA of different organisms, which of the following did Erwin Chargaff conclud...
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