Suppose two genes a and b are 7.4 map units from each other, and that genes b and c are 5.7 map units from each other. You do a cross to determine the map distance between a and c. Which result would indicate that c lies between a and b?

a. 2.0 map units
b. 11.1 map units
c. 14.8 map units
d. 15.0 map units


Ans: a. 2.0 map units

Biology & Microbiology

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The complex of periplasmic flagella that mediates the movement of spirochetes is referred to as the ________.

A. axillary filament B. periplasmic flagella C. axial filament D. peritrichal axon E. periplasmic flagella or axial filament

Biology & Microbiology

The figure below represents a joint in the hind leg of a grasshopper. The exoskeleton of the leg is indicated by the two pairs of parallel black lines. A muscle that moves this leg is fixed to the skeleton at the end marked with a blue star. When the muscle contracts, it will pull on the tendon at its opposite end. Which configuration shows the most likely arrangement of the exoskeleton and a muscle that increases the flexion of this leg?



A.  A
B.  B
C.  C
D.  D

Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?

Gather Content
· What do you know about the orientation of a muscle in a joint? 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?

Biology & Microbiology

As blood enters the lungs, it enters the alveoli by passing across the:

A. pulmonary artery B. pulmonary capillary C. pulmonary arteriole D. pulmonary venule.

Biology & Microbiology

Mouse models for human diseases, such as cystic fibrosis, have been created by recombinant DNA technology.

Answer the following statement true (T) or false (F)

Biology & Microbiology