Question 1
Hybrid dysgenesis in Drosophila results from:
◦ P male × M female crosses.
◦ P male × P female crosses.
◦ M male × P female crosses.
◦ M male × M female crosses.
◦ any cross.
Question 2
Integration of a retrovirus into the host cell genome occurs by:
◦ insertion of the viral RNA into the host genome, mediated by retroviral integrase, followed by repair to make DNA.
◦ insertion of the viral RNA into the host genome, mediated by retroviral integrase and host integration factor, followed by repair to make DNA.
◦ direct insertion of linear DNA copied from viral RNA, mediated by retroviral integrase.
◦ direct insertion of linear DNA copied from viral RNA, mediated by retroviral integrase and host integration factor.
◦ insertion of the single-stranded viral RNA into the host genome, mediated by retroviral integrase, followed by synthesis of a complementary DNA strand and repair to convert the RNA strand to DNA.
Leaf Cell
Telangiectasias usually occurs in women and on the face
The Cell
Neural Integration
The mitochondrion is the center of energy transformation in the cell
(a) The distribution of sickle cell anemia in the Old World. (b) The distribution of malaria overlap