Friday 29 January 2016

Introduction to Genetics

Gregor Mendel, monk, was the father of Genetics.

Last day we had an introduction to Genetics and we defined these terms:
Gene
Allele
Chromatin, Chromatid, Chromosome
Homologous pair of Chromosomes
diploid number vs haploid number or 2n vs n
Human diploid number = 46 chromosomes or 23 pairs, here they are below for a male human






Courtesy National Human Genome Institute http://www.genome.gov/glossary/resources/karyotype.pdf

Each of the HOMOLOGOUS CHROMOSOMES above  can contain many pairs of alleles.  To understand this, we considered an analogy of shoes...