Answer:
Explanation:
DNA is composed of two side-by-side chains (“strands”) of nucleotides twisted into the shape of a double helix. ...
The bases are attached to the 1′ carbon of each deoxyribose sugar in the backbone of each strand. ...
The association of A with T and G with C is through hydrogen bonds
C. Again. For the third time.
Answer:
Twins, says Dr. Judith G. ... Fraternal twins are known to arise when two eggs are released from the ovaries, get fertilized and implant together in the womb. In contrast, identical twins start out as a single embryo, split, and then develop as separate individuals in the womb.
The answer is D. The surface area of rocks decreases because of acid rain
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