An animal with a gastrointestinal tract is the ___________.
A. jellyfish
B. planarian
C. hydra
D. sponge
E. earthworm
E. earthworm
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You are working in a lab studying a gene and notice that there are many other genes that code for similar traits. This is most likely the result of:
A. duplication and divergence. B. reciprocal translocation. C. inversion. D. deletion. E. translocation.
How do eukaryotic cells build and maintain genetic diversity?
A. through horizontal gene transfer B. through asexual reproduction C. by allowing more mutations D. through sexual reproduction
The biochemical oxygen demand (BOD) test is primarily a measure of carbon demand and should not include nitrogen oxidation demand.
Answer the following statement true (T) or false (F)
The allele F codes for freckles and f codes for few freckles. Select the correct statement about someone who is Ff.
a. the phenotype of this person is Ff b. this person makes gametes that are Ff c. this person has lots of freckles d. this person's genotype is lots of freckles