Humans normally have 46 chromosomes in each cell, divided into 23 pairs. Two copies of chromosome 20, one copy inherited from each parent, form one of the pairs. Chromosome 20 spans about 62 million DNA building blocks (base pairs) and represents approximately 2 percent of the total DNA in cells.
Identifying genes on each chromosome is an active area of genetic research. Because researchers use different approaches to predict the number of genes on each chromosome, the estimated number of genes varies. Chromosome 20 likely contains between 700 and 800 genes.
Genes on chromosome 20 are among the estimated 20,000 to 25,000 total genes in the human genome.
Soybeans outmatch all other legumes as the protein powerhouses of the plant kingdom, providing a key protein source for humans and livestock around the world.
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