Inside the nucleus of a are arrangements of DNA called, which are the basic units of heredity

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?

What gases are carried by the blood

How do bacteria protect their genetic material and cytoplasm during harsh conditions