diff --git a/docs/01-biological-foundations/01-cells-genomes-dna-chromosomes.md b/docs/01-biological-foundations/01-cells-genomes-dna-chromosomes.md
index 3b2ddb36..cd1c6cda 100644
--- a/docs/01-biological-foundations/01-cells-genomes-dna-chromosomes.md
+++ b/docs/01-biological-foundations/01-cells-genomes-dna-chromosomes.md
@@ -25,7 +25,7 @@ for more information.
 
 Everything in this guide refers to eukaryotic molecular biology, which is the
 study of organisms whose DNA is enclosed within a nucleus. Broadly speaking,
-most familiar species are eukaryotes, except bacteria which has DNA spread
+most familiar species are eukaryotes, except bacteria which have DNA spread
 throughout the cell. At times, this document will be geared towards the
 sequencing of human cells specifically.