If nondisjunction occurs during meiosis I, ____
a. two gametes will be normal and two will be missing one chromosome
b. two gametes will be normal and two will have one extra chromosome
c. three gametes will be normal and one will have two extra chromosomes
d. all gametes will be normal
e. all gametes will be abnormal
e
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Gnetophytes are of great interest to plant biologists because they have many traits more typical of angiosperms, such as:
A. living xylem cells. B. wind pollination. C. double fertilization. D. few, slow-growing leaves. E. cones.
Which of the following is a water mold that
was responsible for the Irish famine in the mid- 1800s?
a. Phytophthora b. Plasmodium c. E. coli d. Staphylococcus e. Trichomonas
Louisiana has lost an area the size of __________ to
the sea since the 1940s. a. Connecticut b. New Jersey c. Rhode Island d. Maryland e. New York
The oxygen released in photosynthesis comes from ____.
A. carbon dioxide
B. glucose
C. ribulose bisphosphate
D. water
E. atmospheric oxygen