Answer:
1. Thymine, Guanine
2. 36% Adenine
Explanation:
1. Edwin Chargaff, who proposed the complementary base pairing rule, stated in his rule that the amount of purine bases (Adenine and Guanine) is equal to the amount of Pyrimidine bases (Cytosine and Thymine). This means that, in a DNA molecule, the amount of adenine is always equal to Thymine (A=T) and the amount of Cytosine is equal to Guanine (G=C).
Also, the total amount of the four nucleotide bases that make up a DNA molecule is equal to 1 or 100% i.e. A+T+G+C= 100%
2. Based on the rule above, if a sample of jelly fish DNA contains 14% Cytosine, the amount of its complementary pair (Guanine) will also be 14%.
Hence, Cytosine and Guanine will collectively occupy 14+14=28% of the DNA.
To find the amount of the other two bases i.e. Adenine and Thymine, we subtract 28% from 100%
That is, 100 - 28 = 72%
If both Adenine and Thymine contains 72% and each must be equal, we divide 72% by 2 to get the amount of each.
Hence, 72/2 = 36% of Adenine and 36% of Thymine.
According to the question, Adenine will contain 36% in the Jellyfish DNA.
Answer:
an individual animal, plant, or single-celled life form.
Answer:
The correct answer is D- Observe the feeding behaviors of seagulls.
Explanation:
A biological activity can be understood as a the process in which a living being modifies it's biological components in order to survive.
In order for an activity to be considered biological, a living being has to be present in the process.
In this particular case, there are three answers that lack the presence of a living being.
Answer a: Talks about sand (Not living being)
b: Minerals: (Not living beings)
c: Tidal: Not living beings.
So, in conclusion, D- Observe the feeding behaviors of seagulls (living beings) is the correct answer.