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 mother?
A) IAIA
B) IBIB
C) ii
D) IAi
E) IAIB
Ans: D) IAi
You might also like to view...
Rhizomes, tubers, corms, and stolons are examples of modified
a. leaves. b. bulbs. c. roots. d. flowers. e. stems.
Alkylating agents, such as ethylmethane sulfate (EMS), are mutagens because they
A) promote deletions and insertions. B) remove amine groups. C) add hydroxyl groups to bases. D) add ethyl or methyl groups to bases. E) fit between stacked bases and disrupt replication.
Which of the following would produce an ecosystem with a small number of trophic levels?
A) an ecosystem with short growing seasons B) coldwater ocean ecosystems C) an ecosystem small in size and biomass D) an ecosystem in which insects are absent
Anna is conducting an experiment using a pH indicator that is red at low pH, green at neutral pH and purple at high pH. She starts with a green solution. When she adds compound X to her solution it turns purple. Then she adds compound Z to the solution and it turns green. She adds more Z, the solution remains green. These observations suggest X is ________ and Z is ________.
A. a base; a buffer B. an acid; a base C. a base; a strong acid D. an acid; a buffer E. a buffer; a base