A homozygous recessive genotype would be represented by _______.

a) bb
B) It depends on the gene.
c) Bb
d) BB


Answer: a) bb

Biology & Microbiology

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Which microbial grouping is the major oxygenic phototroph in most salt lakes?

A) cyanobacteria B) Dunaliella, a eukaryotic alga C) halophilic Archaea D) purple nonsulfur bacteria

Biology & Microbiology

Experimental mutations in the timing of Hox gene expression cause lab mice to develop deformed limbs. This is an example of  

A.  evolution of a new gene to code for the new morphology. B.  homeosis. C.  heterochrony. D.  a change in spatial pattern of gene expression. 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 heterochrony?   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?

Biology & Microbiology

Gene duplication can result from _____

a. a normal crossover event b. exon shuffling c. unequal crossing over d. a point mutation e. alternative splicing

Biology & Microbiology

If the entire history of the Earth is symbolized by a 12-month calendar, dinosaurs and mammals both appear in the

month of ____.

a. August b. September c. October d. November e. December

Biology & Microbiology