Which was the last human chromosome to be completely sequenced:
a. Chromosome 1
b. Chromosome 11
c. Chromosome 21
d. Chromosome x
NCERT Class XII
Biology - Main Course Book
Chapter 6. Molecular Basis of Inheritance
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(B) Chromosomes 11 is the correct option
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Answer: The chromosome that is completely sequenced is chromosome 1.
It was completely sequenced 20 years after the beginning of the Human Genome Project. It is known to be the biggest(largest) human chromosome till date. Human beings have two copies of chromosome 1. This chromosome has 249 million base pairs and is about 8% of total DNA in human cells.
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