AP BIOLOGY

Detailed explanation-1: -The entire genome size is 3286 Mb (=3.3 x 10 9 bp), with chromosomal sizes ranging from 45 to 275 Mb. As a result, there are 3.3 x 10 9 base pairs in the haploid content.

Detailed explanation-2: -Diploid human cells contain 46 chromosomes (22 autosomal pairs plus XX or XY) with a total of 6 billion base pairs of DNA (so, the haploid human genome size is 3 billion base pairs).

Detailed explanation-3: -Haploid refers to the presence of a single set of chromosomes in an organism’s cells. Sexually reproducing organisms are diploid (having two sets of chromosomes, one from each parent). In humans, only the egg and sperm cells are haploid.

Detailed explanation-4: -For this reason, a total of 6 billion nucleotides must actually be sequenced to order the 3 billion nucleotide pairs in the haploid human genome.

Detailed explanation-5: -One copy of the human genome consists of approximately 3 billion base pairs of DNA, which are distributed across 23 chromosomes.