articles Flashcards
how many types of domestic dogs are there
400
how many years have dogs been bred for and how have they been bred
bred through selective breeding for 14 000 years
most dog breeds were formed in the last how many years
500 to 1 000
what was the worlds first genetically engineered food animal
salmon
how is aquaAdvantage salmon produced
by transplanting a portion of the antifreeze gene of the eel-like ocean pout into the growth gene of the Chinook salmon and transferring the combined genetic material into the fertilized eggs of the north Atlantic salmon
what are germ-line genetics
permanently altering genes that get passed down to offspring
why are embryos being made with 3 parents and how
the egg is fertilized by a male and female, and the donor eggs nucleus is cut out and thrown away and the first eggs nucleus is then put in the donor egg. the DNA belongs to the two original parents but the cytoplasm and mitochondrial DNA belongs to the donor. this will prevent inherited diseases caused by mutations in mitochondrial DNA
how many people carry defects in their mitochondrial DNA
1 in 5 000
why are they not allowed to place the 3-parent embryo into a womb
the embryo must be destroyed because of germ-line genetics
why are hybrid embryos made
for stem cell research
how are hybrid embryos made
human DNA is injected into a cow or rabbit egg. a burst of electricity causes it to divide and become an early embryo in which stem cells are extracted. then they are thrown away, killed
what will hybrid embryos lead up to
designer babies
what is controversial about the studies that the US government is funding related to newborns
a complete genetic profile, genome is performed on every newborn
what is the NIH doing with 1300 premature babies
they are given different amounts of oxygen to see if there is a difference in how healthy they are. many died
