Which chemical is used to keep chromosomes from
separating during metaphase?
a. Giemsa stain
b. acetone
c. colchicine
d. alcohol
e. formaldehyde
Answer: c
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A mutation in the HTT gene is associated with which disease?
A. breast cancer B. diabetes C. Huntington's disease D. heart disease E. ovarian cancer
Which of the following statements is NOT a correct description of an advantage that seeds have over spores?
A. Seeds can remain dormant and survive unfavorable conditions. B. Seeds are produced in greater numbers than spores. C. Seeds are tougher and can resist abrasion better than spores. D. Seeds are more resistant to pathogens. E. Production of seeds does not require water as a medium for sperm transport.
Exotic species are
A. from the tropics. B. species moved by humans from a native location to another location. C. species moved by natural forces from a native location to a new location. D. from the tropics and species moved by humans from a native location to another location. E. from the tropics, species moved by humans from a native location to another location, and species moved by natural forces from a native location to a new location.
Hormones are cleared from the body by endocrine glands
Indicate whether the statement is true or false.