Which of the following refers to the loss of a portion of a chromosome?
A) inversion
B) translocation
C) deletion
D) duplication
E) monosomy
Ans: C) deletion
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Maximum force is generated by a muscle contraction when:
A. the myofibril is stretched. B. there is excessive overlap between actin and myosin. C. the sarcomere is at intermediate length prior to initiation of contraction. D. intracellular calcium levels are low.
Match the following items with the correct phrases.
_______1. The width of a typical coccus. _______2. The resolving power of the unaided eye. _______3. The resolving power of the scanning electron microscope. _______4. The resolving power of the transmission electron microscope. _______5. The resolving power of the compound light microscope. a. 0.2 nm b. 20 nm c. 0.2 ?m d. 1 ?m e. 0.2 mm
The photolysis of water occurs in conjunction with photosystem I
__________________ Indicate whether the statement is true or false.
In red-winged blackbirds, females tend to choose males with the most desirable territories and males compete with each other for territories.True or false: Redwing blackbirds demonstrate both intersexual selection and intrasexual selection.
Answer the following statement true (T) or false (F)