THE MOLECULAR BASIS OF INHERITANCE
DNA MAKES RNA MAKES PROTEIN
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
5
|
|
|
2
|
|
|
3
|
|
|
4
|
Detailed explanation-1: -There are four nucleotides, or bases, in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T).
Detailed explanation-2: -The four bases in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). These bases form specific pairs (A with T, and G with C).
Detailed explanation-3: -Because four is the minimum possible number. If there is no push to make a system more complex, it will never assemble. One might then argue that a similar system could have been built only using two bases.
Detailed explanation-4: -Yet in recent history, scientists have expanded that list from four to six. Now, researchers have discovered the seventh and eighth bases of DNA. For decades, scientists have known that DNA consists of four basic units–adenine, guanine, thymine and cytosine.
Detailed explanation-5: -nitrogenous bases-there are four of these: adenine (A), thymine (T), cytosine (C), guanine (G)