The procedure in which amniotic fluid is withdrawn and analyzed for fetal cell abnormalities is called
a. chorionic villus sampling.
b. preimplantation diagnosis.
c. amniocentesis.
d. fetoscopy.
e. senescence.
C
You might also like to view...
What is the correct sequence of steps during infection of plants by nitrogen-fixing bacteria?
A) Rhizobia release Nod factors; roots release flavonoids; rhizobia proliferate inside of root hair; infection thread grows into the root cortex; nodule forms. B) Rhizobia release flavonoids; roots release Nod factors; rhizobia proliferate inside of root hair; infection thread grows into the root cortex; nodule forms. C) Roots release flavonoids; rhizobia release Nod factors; rhizobia proliferate inside of root hair; nodule forms; infection thread grows into the root cortex. D) Roots release flavonoids; rhizobia release Nod factors; rhizobia proliferate inside of root hair; infection thread grows into the root cortex; nodule forms. E) Nodule forms; infection thread grows into the root cortex; rhizobia proliferate inside of root hair; rhizobia release flavonoids and Nod factors.
In metabolic channeling, the regulation of metabolic pathways is controlled by the ________ of metabolites and enzymes involved in the pathway.
A. location B. amount C. activity D. All of the choices are correct.
The rate of molecule movement in electrophoretic gels depends on three parameters of molecular structure
Each of these parameters individually is important in determining how a particular molecule migrates, but they can also interact with one another to produce a characteristic migration rate for each molecule. What are the three parameters?
Why is it essential that meiosis produce haploid cells?
a)so that the number of chromosomes will double each generation b)to produce haploid offspring c)to prevent the number of chromosomes from doubling each generation d)to produce diploid gametes e)to allow asexual reproduction