How many different types of gametes can be produced by a short plant with yellow, round peas with a heterozygous genotype (YyRrSs)?
A) 3
B) 6
C) 8
D) 10
E) 12
C
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Which of the following would be most significant in understanding the structure of an ecological community?
I) determining how many species are present overall II) determining which particular species are present III) determining the kinds of interactions that occur among organisms of different species IV) determining the relative abundance of species A) only I and III B) only II and IV C) only I, II, and III D) only II, III, and IV E) I, II, III, and IV
How does phosphorus normally enter ecosystems?
A) cellular respiration B) photosynthesis C) rock weathering D) vulcanism E) atmospheric phosphorous gas
Which of these statements about snakes is
false? a. All snakes are carnivores. b. All snakes use internal fertilization. c. All snakes are venomous. d. All snakes have flexible skull bones and hinged jaws. e. Some snakes retain skeletal remnants of hindlimbs.
Which of the following is not true about the cytotoxic T cell response?
What will be an ideal response?