Identify the numbered items in the accompanying figure. Include the following terms in your description. • presynaptic neuron • postsynaptic neuron • neurotransmitters waiting to be released • neurotransmitters released by the nerve impulse • synapse • receptors with bound neurotransmitters
What will be an ideal response?
The numbered items correspond to the following descriptions:
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In animals, somatic cells are ________ and germ cells are __________
A. diploid ; diploid B. diploid ; haploid C. haploid ; diploid D. haploid ; haploid
In plants, the gametes produced by a particular gametophyte are
a. always identical because they result from meiosis. b. always identical because they result from mitosis. c. sometimes identical because they result from meiosis. d. sometimes identical because they result from mitosis. e. never identical because they result from meiosis.
What statement best summarizes the evolutionary history of eyes?
A. Development of light-sensing organs evolved once, but several eye structures evolved separately. B. Eyes evolved once and were slightly modified in different phyla. C. Eyes evolved separately in each phylum from an ancestor with no ability to detect light. D. Light-detection organs can develop with very little developmental constraint. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about eyes? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
If the gene for yellow body color (y) is an X-linked
recessive and its dominant counterpart (y+) produces wild body colors, give the phenotypes expected and their frequencies for the following four crosses: (a) yellow female x wild male (b) wild carrier female x wild male (c) wild carrier female x yellow male (d) homozygous wild female x yellow male What will be an ideal response?