On every pair of chromosomes there are how many forms of each gene?

Part of the explanation for the dramatic rise in the typical ages of entering marriage and parenthood today in developing countries is participation in tertiary education as preparation for entry into the workforce

a. true b. false

Marianne is seven months pregnant. She was recently exposed to the rubella and was never

immunized as a child. She is concerned about the risk to her baby if she contracts the virus. What should.Marianne know? A) She can request an immediate immunization from her obstetrician. B) The highest risk of fetal damage from rubella occurs in the first eight weeks of pregnancy. C) The highest risk to her baby will occur in the eighth month of pregnancy. D) Rubella cannot cross the placenta so there is no risk to her baby.