In anaphase I, ________ separate and in anaphase II, ________ separate.
A. sister chromatids, homologous chromosomes
B. homologous chromosomes, sister chromatids
C. haploid cells, diploid cells
D. sister chromatids, haploid cells
E. homologous chromosomes, diploid cells
Answer: B
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Many insects, like moths and flies, undergo complete metamorphosis. What would you predict about gene expression in these two kinds of insects?
A. The basic organization of homeotic genes is the same in both larvae and adult, but the expression of some other genes must be different. B. Completely different sets of genes must be used in the development of larvae and the adult. C. The order of homeotic genes along the body axis must be different in larvae and adult. D. The same genes are expressed at each stage, but the age and number of cells accounts for the minor morphological differences. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about homeotic genes and metamorphosis? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach 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?
Uneven curvature of the corneas causes
a. cataracts. b. myopia. c. hyperopia. d. trachoma. e. astigmatism.
Put the following events of elongation in prokaryotic translation in chronological order
1. Binding of mRNA with small ribosomal subunit 2. Recognition of initiation codon 3. Complementary base pairing between initiator codon and anticodon of initiator tRNA 4. Base pairing of the mRNA codon following the initiator codon with its complementary tRNA 5. Attachment of the large subunit A) 1, 2, 3, 4, 5 B) 2, 1, 4, 3, 5 C) 5, 4, 3, 2, 1 D) 1, 2, 3, 5, 4
In summer, a(n) ____________________ prevents upper and lower waters from mixing, causing low oxygen content in deeper waters.
Fill in the blank(s) with the appropriate word(s).