The practitioner carefully monitors his client who exhibits hemoglobin s (hbs) genes. the practitioner know that the client is predisposed to life-threatening infection due to damage by hbs to which of the following organs?
-spleen
-lungs
-heart
-pancreas

How does a gymnosperm prevent itself from pollinating the same tree

During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.

The cell membrane controls what enters and leaves the cell. which of the structures in the diagram below is the cell membrane? — f оооо