Sickle-cell anemia is a disease of the red blood cells. a person who carries one sickle-cell gene is physically normal, but has the potential to pass on the sickle-cell trait to his or her offspring. in a person with two sickle-cell genes, the blood cells collapse and cannot carry enough oxygen to the body's cells. this person can have fatal anemia. based on this information, which statement best describes the gene for sickle-cell anemia? a. it is an acquired gene. b. it is a sex-linked gene. c. it is a dominant gene. d. it is a recessive gene.

Glaucoma is an eye disease that is manifested by high intraocular pressure (iop). the distribution of iop measurements in the general population is approximately normal with mean 16 mm hg and standard deviation 3 mm hg. a random sample of 9 people is selected from the general population. the sample mean iop is 17.2 mm hg with a sample standard deviation of 3.9 mm hg. a) the mean of the sampling distribution of x is 16 mm hg. b) the standard deviation of the sampling distribution of x is 1.3 mm hg. c) the sample mean of every sample of size 9 will be 17.2 mm hg d) none of the answers are true. e) exactly 2 of the answers are true.

Viruses can cause the following, check all that apply. a. sore throat b. measles c. ear infection d. flu e. chicken pox

Identify two ethical principles that can teens deal with difficult decisions