Which of the following have chloroplasts (or structures since evolved from chloroplasts) thought to be derived from ancestral green algae?
A) stramenopiles
B) apicomplexans
C) dinoflagellates
D) chlorarachniophytes
D
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Briefly describe the long-term responses of each population following the removal of the prairie dogs
a. Prairie dogs, ferret, hawks, forbs, and mice remained essentially absent from the community. b. Mesquite continued to dominate the community landscape. c. The grass population eventually stabilized at approximately one-half its original size. d. All of the above.
An individual who is homozygous ______.
A. expresses the dominant trait B. carries two different alleles for a gene C. expresses the recessive trait D. carries two copies of the same allele for a gene
Parasites always complete their life cycle in a single host species
Indicate whether the statement is true or false
During replication, which enzyme unwinds the two strands of the DNA molecule from one another?
A. Primases B. Helicases C. Unwindases D. Ligases