Word: sperm
(lookup in dictionary)
(lookup stats)
Dates: during 2000-2009
Sort By: most recent first
(reverse)
When in vitro fertilization, sperm banks and surrogate motherhood first arrived on the scene, they all raised ethical questions. And while not everyone is satisfied with the answers, these methods for combatting infertility are being used widely today. Cloning is destined to become just another reproductive technique. Parents of clones will learn the same timeless lesson other parents have learned: each child is an individual. LYNNE LYBERGER Livermore, Calif...
...them to clone and instead look elsewhere for their DNA, what sorts of values govern that choice? Do they pick an uncle because he's musical, a willing neighbor because she's brilliant? Through that door lies the whole unsettling debate about designer babies, fueled already by the commercial sperm banks that promise genius DNA to prospective parents. Sperm banks give you a shot at passing along certain traits; cloning all but assures...
...them to clone and instead look elsewhere for their DNA, what sorts of values govern that choice? Do they pick an uncle because he's musical, a willing neighbor because she's brilliant? Through that door lies the whole unsettling debate about designer babies, fueled already by the commercial sperm banks that promise genius DNA to prospective parents. Sperm banks give you a shot at passing along certain traits; cloning all but assures...
...ratio of mutations in males versus females is two to one. This may possibly be linked to the greater number of cell divisions involved in sperm formation versus egg formation...
...therein lies the theoretical debate at the center of the morning-after pill controversy. When does life begin? When the egg and sperm make contact, as many pro-life groups believe? Or when a fertilized egg is implanted in the uterus? Or some time after that...