Amniocentesis and chorionic villus sampling are prenatal procedures that detect congenital abnormalities. classify each statement as a characteristic of amniocentesis, chorionic villus sampling, or both. answer bank:
* normally conducted about 16 weeks after conception
* requires cell cultures
* conducted as early as 10 weeks after conception
* used to prepare a fetal karyotype
* uses placental tissue
* may increase the risk of dental limb defects

(subject is really genetics)

Animals such as pronghorn antelope, bison ans badgers dot to the landscape. where are these animals located?

Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression.c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression.d-neelaredoxin is only produced when there is exposure to o2 or h2o2.

The transport tubes for food coming down the plants are called?