Autopolyploids contain __________ the number of
parental chromosomes and are usually artificially
produced through the application of __________.
a. triple; colchicine
b. double; heat
c. double; colchicine
d. triple; heat
e. double; radiation
Answer: c
You might also like to view...
Which one of the following is a major difference between plants and animals?
A. Animals use sophisticated genetic programs to govern their development and day-to-day functions. Plants do not. B. Plant cells have evolved modifications of the plasma membrane that permit the transfer of information and molecules from one cell to another. Animal cells have not. C. Plants have a meshwork of extracellular molecules that provide structural support and that determine the shape of the cells. Animals do not. D. Animal cells are able to absorb large molecules across their plasma membrane. Plant cells are not.
Factors that can alter the level of expression of a gene include
_____ an increase in environmental temperature. _____ an increase in salinity. _____ exposure to UV radiation. _____ presence of a particular energy substrate.
Why don't many successions reach the climax community status?
A. because the species within the system don't interact constantly B. because species go extinct C. because animals always die D. because the local climate keeps changing and human activities have an impact
Generally speaking a consequence of using an instrumental variable approach with a weak instrument will be:
A. high (in absolute magnitude) coefficient estimates. B. imprecise coefficient estimates (e.g., large standard errors). C. multicollinearity. D. low coefficient estimates.