If two parent organisms have different alleles for a gene that an experimenter wants to test, he or she
will perform a
a. dihybrid cross.
b. monohybrid cross.
c. multiple allele cross.
d. trihybrid cross.
e. polyploid cross.
B
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DNA polymerase
a. is an enzyme. b. adds new nucleotides to a strand. c. proofreads DNA strands to see that they are correct. d. derives energy from free nucleotides for strand assembly. e. is all of these
The plants and animals now present on acreage from which the trees were removed ten years earlier
represent a. primary succession. b. a climax forest. c. pioneer species. d. secondary succession. e. species introductions.
What is the purpose of DNA supercoiling?
What will be an ideal response?
Which of the following hormone(s) is/are not synthesized from cholesterol?
a. Testosterone b. Progesterone c. Corticosteroids d. Retinoic acid