It resolves abortive DNA ligation intermediates, formed either at base excision sites or when DNA ligases try to repair non-ligatable breaks induced by reactive oxygen species. Molecular pathology. Defects of APTX cause ataxia-oculomotor apraxia syndrome, and are a cause of coenzyme Q10 deficiency (COQ10D).
(A bit is a binary digit, either 0 or 1; a byte is 8 binary digits long): 1  If you counted all the bits in one petabyte at one bit per second, itâd take 285 million years. 2  If you counted one byte per second, it would take 35.7 million years. 3  It would take 223,000 DVDs (4.7Gb each) to hold 1Pb.
Bits and Bytes. Each binary digit is called a bit. Use the table above to see how many bits it takes to represent 3,897. Go ahead, we'll wait. That's right, twelve bits. The right-most bit (the one bit) is the least significant bit and the left-most bit (the two-thousand forty-eight bit) is the most significant bit. Since it is easy to lose your place when reading a long string of 0's and 1's, binary numbers are often displayed in 4-bit groups, like this: 1111 0011 1001. Two of these 4-bit groups (eight bits altogether) make a byte, which is the basic unit for measuring the size of a digital memory or storage device. What can you store in one byte? Think about how many different numbers can be encoded with one byte. (It may help to make an analogy with decimal numbers first: how many different numbers can you encode with 2 digits? how many with 3 digits?)