What is allelic exclusion and why is it important?

Allelic exclusion is defined as a process in which only one allelic gene is expressed and other allele remains silenced.

Allelic exclusion plays important role for cell surface receptors in genes and  in immune cells like B lymphocytes. The allelic exclusion controls binding site of B cells and allows only one type of binding site expressed in each B cell as    binding site of an antibody is decided by the combination of a particular heavy and light chain.

events in order:

1.       vishnu schist

2. zoroaster granite

3. bass limestone

4. hakatar   shale

5. igneous intrusion

6. shinumo quartzite

7. dox sandstone

8. tapeats limestone

9. bright angel shale

10. muav limestone

11. temple butte limestone

12. redwall limestone  

nonconformity

answer: the unkar group shows angular unconformity because the layers are turned at angle.

unconformity

answer: specifically the angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled. an angular unconformity occurs between the cambrian and precambrian rocks. the dox sandstone, shinumo quartzite, hakatar shale, and bass limestone have been filled.

disconformity

answer: the disconformities aremarked irregular lines between the sedimentaryrocks layers.