Awoman arrives at the clinic seeking confirmation that she is pregnant. the following information is obtained: she is 24 years old with a body mass index (bmi) of 17.5. she admits to having used cocaine "several times" during the past year and drinks alcohol occasionally. her blood pressure (bp) is 108/70 mm hg, her pulse rate is 72 beats/min, and her respiratory rate is 16 breaths/min. the family history is positive for diabetes mellitus and cancer. her sister recently gave birth to an infant with a neural tube defect (ntd). which characteristics place the woman in a high risk category?

Spherocytosis is an inherited blood disease in which the erythrocytes (red blood cells) are spherical instead of biconcave. this condition is inherited in a dominant fashion, with sph- dominant to sph+. in people with spherocytosis, the spleen "reads" the spherical red blood cells as defective, and it removes them from the bloodstream, leading to anemia. the spleen in different people removes the spherical erythrocytes with different efficiencies. some people with spherical erythrocytes suffer severe anemia and some mild anemia, yet others have spleens that function so poorly there are no symptoms of anemia at all. when 2400 people with the genotype sph- sph+ were examined, it was found that 2250 had anemia of varying severity, but 150 had no symptoms. does this description of people with spherocytosis represent incomplete penetrance, variable expressivity, or both? explain your answer. (3 points)

Which is the link between heredity and tobacco addiction

Avirus consisting of a single strand of rna, which is transcribed into complementary dna, is a ) proteaseb) retrovirusc) rna replicase virusd) nonenveloped virus