In Southern California, February is the month to fertilize
his palms in the spring with blood meal, in summer with Bandini Gro-Rite and, still later in the growing season, applies Woodace Top Dress Palm Special that has an 11-4-6 (nitrogen-phosphorus-potassium) formulation.
Biologists want to understand how females choose the sperm that fertilizes
each of their eggs.
Scientists have now found that during a sperm's creation, its mitochondria--energy-producing units that power all cells--acquire molecular tags that mark them for destruction once the sperm fertilizes
The pair recently chastised fellow scientists for what they contend is a widespread misconception-that one kind of paternal DNA, mitochondrial DNA (mtDNA), does not get into the egg when the sperm fertilizes
pandora that is carrying a female and fertilizes
her eggs-exactly when remains unclear, Funch says.
Still others are working on a method to select a baby's sex based on the type of sperm that fertilizes
the egg (see sidebar).