A cell with three pairs of chromosomes has the genotype Aa Bb Cc, with each locus on a different chromosome. If this cell were to undergo mitotic division, how many genetically different types of daughter cells could be produced?
A) 1
B) 3
C) 6
D) 8
E) 9
A) 1
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Consider the map shown below of a portion of a prokaryotic genome. How might the elements indicated affect the stability and structure of the genome? Assume that IS2 encodes for a transposase that catalyzes conservative transposition
Re-draw the genome map to illustrate your prediction if necessary. | IS2 |__gene1 gene2 gene3 | IS2 | geneA geneB geneC | IS2 | geneD | IS2 | geneX What will be an ideal response?
The table shows the distribution of traits (A-E) in six extant species (1-6). A "0" indicates the ancestral condition, and a "1" indicates the derived condition. Which pair of species shares the greatest number of derived characters (synapomorphies)?
A. 1 and 4
B. 6 and 3
C. 6 and 1
D. 5 and 6
E. 5 and 1
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 cladistics?
Consider Possibilities
· What other information is related to the question? Which information is most useful?
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?
Contraction of the muscles surrounding an arteriole that decreased its diameter by 50% would
A. increase the resistance in the arteriole approximately 16 fold. B. decrease the resistance in the arteriole approximately 16 fold. C. increase the resistance in the arteriole by approximately 50%. D. decrease the resistance in the arteriole approximately 50%. E. not be expected to change resistance in the arteriole.
The spindle apparatus is composed of
a. Golgi bodies. b. microtubules. c. endoplasmic reticulum. d. nucleoprotein. e. chromatids.