A woman who has blood type A, has a daughter who is type O positive and a son who is type B negative. Rh positive is a simple dominant trait over Rh negative. Which of the following is a possible genotype for the son?
A) IBIB
B) IBIA
C) ii
D) IBi
E) IAIA
Ans: D) IBi
You might also like to view...
Polydactyly is a dominant trait that results in extra fingers and toes in humans. A man with polydactyly marries a woman with 10 fingers and toes. They have a child that has a normal number of digits. The phenotype of the man's father is unknown, but his mother has a normal phenotype. What are the genotypes of the married couple? (D = polydactyl allele; d = wild type allele)
A. woman Dd, man dd B. woman DD, man dd C. woman dd, man DD D. woman dd, man Dd E. woman DD, man Dd or dd
Stress hormones have been shown to interact with drugs of abuse in that
a. stressors enhance the responses of rodents to psychostimulants like amphetamine. b. humans may relapse to drug use behaviors when under stress. c. they may alter the responsiveness of brain dopamine systems. d. All of the above
Diarthroses
What will be an ideal response?
The pH of your small intestines is around 7.5 and the pH of your large intestine can be 5.5. As substances travel from the small intestines to the large intestine, what would happen to the H+ ion concentration?
A. It increases 2 fold. B. It increases 10 fold. C. It increases by 100 fold. D. It decreases 10 fold. E. It decreases 100 fold.