Concerning the sex chromosomes, which of the following is correct?
a. The Y chromosome carries a greater number of nonsexual traits.
b. X and Y are different in size but carry nearly equal numbers of genes.
c. The X chromosome carries more genes for nonsexual traits.
d. The X chromosome carries only gender-related genes.
e. The X chromosome carries the SRY gene.
C
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While driving, if pulled over, and a law officer asks you to walk in a straight line, the officer is testing the skills controlled by what part of your brain?
What will be an ideal response?
The compounds involved in phototropism are ____
a. phototropins b. gibberellins c. cytokinins d. phytoestrogens e. statoliths
Polyploidy
a. can occur naturally. b. occurs when there are more than two sets of chromosomes. c. means more than two complete chromosome sets d. is responsible for some of our major foods. e. is all of these.
You are examining an organism recently found on Mars and are currently trying to identify one of its neurotransmitters. Biochemical characterization indicates that it is a derivative of the amino acid tyrosine,
so you classify the novel neurotransmitter as a(n) A) acetylcholine analogue. B) catecholamine. C) neuropeptide. D) serotonin analogue. E) GABA analogue.