How is sexual reproduction different from asexual reproduction?
A. Sexual reproduction occurs with only a single parent.
B. Asexual reproduction requires testes and ovaries.
C. Sexual reproduction requires fertilization of an egg by a sperm.
D. Asexual reproduction requires two kinds of cell division.
C. Sexual reproduction requires fertilization of an egg by a sperm.
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Some members of the Thermoplasmatales can grow at pH levels below
A) 4. B) 7. C) 0. D) 10.
Both DNA and RNA polymerases must be able to copy from a template strand with great accuracy. Still, either one can make mistakes that could lead to a mutation
For which one of these polymerases would a mistake be the most serious in the long term? Explain your answer.
One of the possible concerns about genetically modified foods is that they might kill organisms that we don't want to kill. Which of the following is an example of this phenomenon?
a) Featherless chickens have become prey to more animals than feathered chickens. b) Genetically modified super-sized salmon have been known to kill the bald eagles that generally feed on them. c) The pollen from plants containing insect-killing Bt genes can be blown onto other plants. Insects that we don't want to kill, such as monarch butterflies, may be killed by such pollen. d) Bears eating genetically modified corn may be poisoned by the Bt gene introduced to the corn to act as a pesticide. e) In the Irish Potato Famine, more than one million people died as a result of the lack of genetic diversity in the potato crop.
All of the following are included in the Basidiomycetes EXCEPT ________.
A. stolons B. yeasts C. smuts D. puffballs