They both wanted, needed offspring--all their kin struck down by the cholera.
Generally all 24 flies exposed to MTX came from the same vial (~80% of the time), although occasionally we needed additional offspring from the backup vial.
Despite Kenya introducing free primary education in 2003, some families can't afford to buy uniforms for their children or pay one-off admission fees – or they need their offspring to help support the family.
Long before Darwin, most people knew that for most organisms, as for humans, both males and females were needed to produce offspring, but even after centuries of investigation and speculation, no one knew exactly why, nor exactly what each contributed to their progeny.
Another perk: The bank now archives blood samples from each donor in case further testing is needed as donor offspring grow up.
The palmar grasp reflex of human babies is thought to be a vestige from ancestral primates, where offspring needed a firm grasp of their mothers' fur as they were carried (Dewey [1935]).
One chimp, Pan, showed an unusual preference to offer the brush first, regardless of the task at hand, but once it was removed, she typically picked the tool her offspring needed.
It is my hope to write and publish more articles on this topic so that the Library of Congress can see that more appropriate terms are needed for donor offspring and other topics related to assisted reproductive technology.
The group of male clownfish produces the single female fish, but both the group of male clownfish and the female clownfish are needed for the offspring.
In many organisms, resources can be diverted to maintenance and repair programs to retain cellular integrity to the extent needed to ensure offspring birth and survival.
Indeed, intense selection for resistance is inevitable when insecticides are applied at the coverages required to provide significant public health gains, particularly for highly anthrophilic species: insecticides prevent malaria by killing the female Anopheles or by preventing them taking the blood meals needed to produce offspring.
