A basal body is
A) composed of nine microtubule triplets surrounding a central pair of microtubules.
B) similar in structure to centrioles.
C) composed of nine microtubule doublets surrounding a central pair of microtubules.
D) identical in structure to cilia.
Answer: B
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In rabbits, four alleles exist for the c gene. The wild-type version, C+C+, is expressed as brown fur. The chinchilla phenotype, cchcch, is expressed as black-tipped white fur. The Himalayan phenotype, chch, has black fur on the extremities and white fur elsewhere. Finally, the albino, or “colorless” phenotype, cc, is expressed as white fur. This is an example of which type of inheritance?
a. codominance b. multiple mutations c. multiple alleles d. recessive lethal
Recall that in many plants, if the shoot apical meristem is removed, axillary buds become active and new lateral branches form. What is this an example of?
A. auxin dominance B. axillary dominance C. meristem dominance D. apical dominance
The cities of Portland, Oregon, and Minneapolis, Minnesota, are at about the same latitude, but Minneapolis has much hotter summers and much colder winters than Portland. Why?
A) They are not at the same exact latitude. B) The ocean near Portland moderates the temperature. C) Fresh water is more likely to freeze than salt water. D) Minneapolis is much windier, due to its location in the middle of North America.
Carbon dioxide molecules enter the light-dependent reactions from the atmosphere.
Indicate whether the statement is true or false.