Hermaphrodites are animals that
A) possess both male and female reproductive systems.
B) have the gonads of one sex but the external appearance of the other.
C) develop from unfertilized eggs.
D) must fertilize themselves.
Answer: A
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The goal of ________ is to identify each protein present in a given microenvironment at the time of sampling.
A. metaproteomics B. both metagenomics and metaproteomics C. metagenomics D. None of the choices are correct.
Larval salamanders eat small insects and crustaceans. These insects and crustaceans are
herbivores. Thus, the salamanders belong to the __________ trophic level.
a. first b. second c. third d. fourth
The PCR technique doubles the amount of DNA in a sample in each cycle. If you started the PCR technique with two fragments of double-stranded DNA, calculate how many double-stranded DNA fragments you would you have after four cycles.
A. 16 B. 64 C. 32 D. 8
If two species have homologous structures:a
the structures have the same function. b. the structures are identical. c. the species are related by a common ancestry. d. the species have very different ancestors. e. the structures have the same function and they are identical