Diatoms belong to the group ____
a. Bacillariophyta
b. Phaeophyta
c. Chrysophyta
d. Rhodophyta
e. Chlorophyta
ANSWER: a
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Comb-jellies are similar to bilaterians in that they (select all that apply):
A. have a "flow-through" gut with both a mouth and an anus. B. develop muscle cells from a rudimentary mesoderm. C. have an anterior-posterior body axis. D. use acetylcholine as a neurotransmitter. E. none of these.
Describe the relationship between single nucleotide polymorphisms and haplotypes and explain how each is used in
genome-wide association studieWhat will be an ideal response?
The bacterium that causes botulism disease is harmless until it:
a. is infected by lytic bacteria. b. is infected by certain retroviruses. c. contains a certain prophage DNA. d. is irradiated by UV radiation. e. is infected by prions
A man who is colorblind marries and has children by a woman who has normal color vision. The woman's father had normal color vision but her mother was colorblind. Color blindness is an X-linked recessive disorder. What are the chances that this man and woman will give birth to a colorblind girl (restated: of all the possible children, how many would be female and color blind)?
a. None b. 25% c. 50% d. 75% e. 100%