The human genome project did not discover copy number variants because
A)people did not know they existed.
B)the sequenced and overlapped DNA pieces were unique.
C)there are too many to count,and they overlap among individuals.
D)no restriction enzymes are known that cut at these sequences.

Question

Quizplus · Accepted Answer

The sequenced and overlapped DNA pieces that were used in the human genome project were unique, meaning that they did not overlap with other regions of the genome. Copy number variants are regions of the genome that are duplicated or deleted in different individuals or populations. Because they do not have a unique sequence, they cannot be easily detected using the methods used in the human genome project.

The Human Genome Project Did Not Discover Copy Number Variants