Mendel demonstrated which of the following about inherited traits? Check all that apply.
_____ traits can be hidden in some generations, but subsequently reappear unchanged in future generations.
_____ traits segregate among the offspring of a cross.
_____ certain traits are more likely to appear than their alternatives.
_____ some traits show blending inheritance.
_____ parents that both have the same trait can have offspring with an alternative trait.
__X__ traits can be hidden in some generations, but subsequently reappear unchanged in future generations.
__X__ traits segregate among the offspring of a cross.
__X__ certain traits are more likely to appear than their alternatives.
_____ some traits show blending inheritance.
__X__ parents that both have the same trait can have offspring with an alternative trait.
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Consider the following two half reactions:NAD+ + H+ + 2e- ? NADH Eo (volts) = - 0.32Pyruvate- + 2H+ + 2e- ? lactate 2- Eo(volts) = - 0.19In a redox reaction involving NAD/NADH and pyruvate, ________ will be the electron donor and ________ will be the electron acceptor.
A. pyrvuate; lactate B. NADH; pyruvate C. lactate; pyruvate D. NAD+; pyruvate
Which of the following is true regarding anabolic steroids?
A. Anabolic steroids were first developed by pharmaceutical companies in the late 1800s for the treatment of diseases associated with muscle wasting. B. Anabolic steroids are developed from estrogen, the female sex hormone. C. Because the use of anabolic steroids is illegal without a prescription, the purchase of these compounds has decreased over the past twenty years. D. Anabolic steroids have been found to cause few side effects and do not pose a serious health risk. E. Anabolic steroids increase muscle mass and are thought to help improve athletic performance.
Asexually produced spores will result in offspring that
a. have no mating type. b. are genetically distinct from the parent fungus. c. are clones of the parent fungus. d. have a different mating type from the parent fungus. e. are unable to reproduce.
During the 1980s, wolves were reintroduced to Yellowstone National Park after decades of absence due to attempted extermination in the early part of the twentieth century
Within 20 years, not only had the wolf population increased, but there was also a dramatic increase in other species, such as aspen, cottonwood, and willow trees, beavers, warblers, insects, and fish. These changes in Yellowstone Park are examples of how important a(n) ________ can be to an ecosystem. A) keystone species B) competitor C) herbivore D) parasite