Describe the ways in which fungi reproduce.
What will be an ideal response?
Fungi reproduce both sexually and asexually; the precise mechanism of reproduction depends on the form of the fungus. Yeasts usually bud asexually in a manner similar to that of prokaryotic reproduction, although the cytoplasm is not typically equally shared between parent and daughter cell. Filamentous fungi can reproduce by the use of a variety of asexual spores, such as sporangiospores, chlamydospores, or conidiospores, based on the type of fungus. Filamentous fungi can also produce sexual spores that are the product of cellular fusion and meiosis and that create genetic variation in a population. Because of the diversity observed among fungi in this area, they are often classified according to the nature and morphology of their sexual reproductive structures and spores.
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A friend tells you a story about his grandmother, who moved to your city from her home across the ocean when she was very young, bringing with her a pair of mice that were commonly kept as pets where she was born. Shortly after arriving, however, the mice escaped. After listening to this story, you do some research and discover that the wild mice that live in your city have only been documented within the past half century and, although they share distinctive traits with domesticated mice that only exist near your friend’s grandmother’s birthplace, they are unable to interbreed. Which statement could be true?
a. The mice in your city have acquired a mutation that renders them incapable of reproduction. b. The two populations of mice are unable to reproduce due to reinforcement. c. Your friend’s grandmother inadvertently caused allopatric speciation via dispersal. d. The similarity between these two species of mice can be explained by vicariance.
Which is a good reason to have fiber in your diet?
A. It prevents scurvy. B. It reduces the chances of colon cancer. C. Fiber is rich in essential amino acids. D. Fiber contains the essential fatty acid oleic acid.
Which of the following represents what Darwin thought of natural selection?
a. He reasoned that if characteristics that better enable organisms to adapt to specific environmental pressures exist, then selective breeding could do the same. b. He reasoned that if a person could select different characteristics when breeding organisms, then nature could do so as well. c. Humans were selecting the characteristics they wanted in the offspring by choosing parents with those traits. d. Humans were selecting the characteristics they wanted in the offspring by eliminating indiv
What do DNA and RNA have in common?
A. Both contain deoxyribose. B. Both are composed of nucleotides. C. Both form double helices. D. They are composed of the same nucleotides.