* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Biology Chapter 11-5 - Wayne County Public Schools
Segmental Duplication on the Human Y Chromosome wikipedia , lookup
Human genome wikipedia , lookup
Oncogenomics wikipedia , lookup
Epigenetics of neurodegenerative diseases wikipedia , lookup
Long non-coding RNA wikipedia , lookup
Public health genomics wikipedia , lookup
Gene desert wikipedia , lookup
Pathogenomics wikipedia , lookup
Site-specific recombinase technology wikipedia , lookup
Skewed X-inactivation wikipedia , lookup
History of genetic engineering wikipedia , lookup
Nutriepigenomics wikipedia , lookup
Quantitative trait locus wikipedia , lookup
Essential gene wikipedia , lookup
Neocentromere wikipedia , lookup
Polycomb Group Proteins and Cancer wikipedia , lookup
Genome evolution wikipedia , lookup
Gene expression programming wikipedia , lookup
Y chromosome wikipedia , lookup
Microevolution wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Designer baby wikipedia , lookup
Ridge (biology) wikipedia , lookup
Minimal genome wikipedia , lookup
Genomic imprinting wikipedia , lookup
Gene expression profiling wikipedia , lookup
X-inactivation wikipedia , lookup
Biology and consumer behaviour wikipedia , lookup
Biology Chapter 11-5 Linkage and Gene Maps Question??? It’s easy to see how genes located on different chromosomes assort independently, but what about genes located on the same chromosome? Wouldn’t they generally be inherited together? The answer to the question is… Yes!! Thomas Hunt Morgan’s research on fruit flies led him to the principle of linkage. After identifying more than 50 fruit fly genes, Morgan discovered that many of them appeared to be “linked” together. Morgan’s Experiment Morgan and his friends found that the fruit fly had 4 linkage groups (genes that were inherited together). The linkage groups assorted independently but all the genes were inherited together. The fruit flies not only had 4 linkage groups but they had 4 pairs of chromosomes which led to two conclusions……. Conclusions of fruit flies 1. Each chromosome is actually a group of linked genes. 2. Mendel’s principle of independent assortment still holds true. It is the chromosomes that assort independently, not individual genes. The genes for this fruit fly’s reddish-orange eyes and miniature wings are almost always inherited together. The reason for this is that the genes are close together on a single chromosome. So.. What is a gene map? It shows the relative locations of each known gene on one chromosome. The numbers given the exact location on the chromosome