0% according to the Punnett square I came out with, when you cross Yy with uu, you get 50% Yu and 50% yu
Answer:
forest fires
Explanation:
An environmental change that occurs quickly and affects organisms immediately (causing behavioral adaptations).
floods, forest fires, blizzards, volcanic eruptions,
People with two copies of the sickle cell gene have the disease. People who carry only one copy of the sickle cell gene do not have the disease, but may pass the gene on to their children. Abnormal hemoglobin, called hemoglobin S, causes sickle cell disease (SCD). The problem in hemoglobin S is caused by a small defect in the gene that directs the production of the beta globin part of hemoglobin. This small defect in the beta globin gene causes a problem in the beta globin part of hemoglobin, changing the way that hemoglobin works.
