Question

The haploid content of human DNA is
A. 3.3x10⁹ bp
B. 3.3x10⁹ kpb
C. 4.6x10⁶ bp
D. 48502 bp
E. 1.65x10⁹ bp

Answer 1

The human genome includes the coding regions of DNA, which encode all the genes present in the human, and also non-coding regions of DNA do not encode any genes. There are a billion base pairs of DNA that compose the whole pair of chromosomes.

Step by step answer: In a haploid genome of an organism, the amount of DNA present is known as the C-value. The C-value varies greatly over a wide range with the organism’s complexity from prokaryotes to invertebrates and vertebrates as well as plants. The C value paradox is associated with the excessive amount of DNA present in eukaryotic organisms and the variation in the C- value between the species of eukaryotes having identical complexity. The C- value paradox is explained based on junk DNA in the chromosomes and a huge amount of structural DNA present.
For example, around 21000 genes are present in the human genome and its haploid genome, about 3.3 billion base pair are present whereas around 19 to 2000 protein in coding genes are present in the nematode named Caenorhabditis elegans which usually lives in soil and it’s haploid genome, around 100 million base pairs are present. DNA is a long polymer of deoxyribonucleotides and its length varies in various organisms. The total size of human DNA is 6.6x 10⁹ base pair and it is diploid in nature the haploid means the half content of the human DNA which is 3.3x10⁹ base pairs.
Thus, the correct answer is option A: 3.3x10⁹ bp

Note: C-value and the C- Value paradox are different. C-value means the value of haploid DNA constant and is measured typically in picograms. Humans are diploid organisms in the haploid genome only half content is present.