Why do doctors advise women to avoid drinking coffee or alcohol during pregnancy? what affect do these drugs have on a fetus? does this relate to your observations of the effects of these drugs on the chick embryo?

Which of the following processes within viral replication is the greatest source of genetic variation in rna virus populations? a) high mutation rate due to lack of proofreading of rna genome replication errors.b) transcription from the host cell rna polymerase introduces numerous mutations.c) capsid proteins from the host cell can replace the viral capsid.d) viral rna is translated by host cell ribosomes.

Which of the following leukocyte is not correctly matched with its function? -basophils: inflammation -lymphocytes: immune response against viral infections -monocytes: develop into macrophage -neutrophils: produce antibodies

Which of these example of a hereditary risk factor? smoking, eating junk food everyday, being a couch potato, having fair skin that is prone to sunburn