Insight into Blindness Question 1

Quick Links
LENScience Home Insight into Blindness Insight into Blindness Challenge Question 2 Insight into Blindness Challenge Question 3 Insight into Blindness Challenge Question 4 Blank
Blank

Insight into Blindness Challenge Question 1

Guide to discussion

-Be polite
-Assume good faith
-No personal attacks
-Be welcoming

How to edit a wiki movie or if you are in a rush, there is the quick-edit movie. These show you how to contribute to this discussion page. If you cannot open the movie,here are the instructions as a pdf file


Insight into Blindness Challenge Question 1

1. (a) Explain what a Barr Body is and why they are only found in females.
(b) How could the presence of Barr Bodies may affect the phenotype of a female who is:
Heterozygous for an x‐linked gene
Homozygous for an x‐linked gene
(c) All the females in the family who are affected are heterozygous for the mutation. Within the
females in the whanau, there is variation in the severity of the vision impairment. What
biological explanation could account for this variation in the heterozygous female phenotype ?