What does chromosomes do

In a homologous pair, one chromosome comes from the mother, and one chromosome comes from the father. Homologous chromosomes are very similar, but they are not identical. They carry the same genes eg, hair or eye color , but they may not code for the same trait eg, blonde hair or brown eyes.

Occurs before cell division. Consists of three stages: Gap 1 growth , S phase DNA replication and Gap 2 continues growth, prepares for cell division. Tell us what you think about Healio. What is a Genome? Whole-Exome Sequencing vs. Visit Healio. Your Module Progress. Module 1. Module Content.

Thank you for participating in this module. Click below to download the certificate. Download Certificate of Participation. Previous Section Next Section. Follow Healio. Sign Up for Email Get the latest news and education delivered to your inbox Email address. Account Information. Click Image to Enlarge. The usual number of chromosomes inside every cell of your body is 46 total chromosomes, or 23 pairs. You inherit half of your chromosomes from your biological mother, and the other half from your biological father.

Scientists have numbered the chromosome pairs from 1 to 22, with the 23rd pair labeled as X or Y, depending on the structure. The first 22 pairs of chromosomes are called autosomes. In: Facts In the Cell. Related Content:.

What is a cell? What is DNA? What is a telomere? What is inheritance? What does DNA do? What is a gene? What is a chromosome disorder? How helpful was this page? What's the main reason for your rating?