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EastWind [94]
3 years ago
11

PLEASE HELP!! WILL GIVE BRAINEST

Biology
2 answers:
pickupchik [31]3 years ago
8 0

Answer:

removing floating debris from water i do think is the answer if it is wrong i apologize.

Explanation:

deff fn [24]3 years ago
4 0

Answer:

Keeping birds from becoming tangled in fishing line

Explanation:

There are some birds that take advantage of fishing boats to catch fish from the nets. They submerge at great speed under water. But many times they get caught. This is why streamers are placed, the movement of the streamers with the wind scare away the birds and prevent them from being trapped in the fishing nets.

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MArishka [77]

Answer:

A. Yes, because the %A approximately equals the %T and the %G approximately equals the %C in both species.

Explanation:

According to Chargaff's rule, in all cellular DNAs, the number of adenosine residues (A) is equal to the number of thymidine residues (T). And the number of guanosine residues (G) is equal to the number of cytidine residues (C). Therefore, the sum of the purine residues equals the sum of the pyrimidine residues (A+ G= C+ T). It is based on the fact that a purine base always pairs with a pyrimidine base in a double helix DNA.

Chargaff’s rule is followed in all the double-helical DNA molecules irrespective of the species. In DNAs of sea urchin and salmon, the percentage of adenine is equal to that of the thymine and the percentage of guanine is equal to that of the cytosine. Therefore, Chargaff's rule is followed.

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