According to the experiments of Delph and colleagues (1996 ), is sexual selection often stronger for male or female flowers, and what tends to drive this selection?
What will be an ideal response?
Sexual selection is stronger in males, and is due to the need to attract pollinators.
You might also like to view...
"Z lines" in skeletal muscle are composed of
a. discs to which thin filaments are anchored. b. stacked thick filaments along with parts of thin filaments that overlap both ends. c. thin filaments but no thick filaments. d. thick filaments but no thin filaments. e. discs to which thick filaments are anchored.
Which of the following is true of AIDS?
a. It is equivalent to HIV. b. It is highly contagious. c. There is no cure for those afflicted. d. It is caused by a bacterium. e. It can be prevented by vaccination
Which of the following statements about hormones initiating second messenger systems is (are) true?
a) A lipophilic hormone initiates the system by binding to a receptor on the cell membrane b) A single hormone molecule binding to a receptor can ultimately activate millions of proteins c) A G protein is considered to be the second messenger d) Both a and b are true e) Both b and c are true
Of these steps, which occurs first in the production of a recombinant plasmid?
A) cloning B) cutting DNA into fragments C) isolation of a plasmid from a bacterium D) reproduction of the engineered plasmid in bacteria