In fact, no two individuals are the same in a __________.
A: speciation
B: species
A: speciation
B: species
举一反三
- For two individuals who engage in the same two productive activities, it is impossible for one of the two individuals to ( ) A: have a comparative advantage in both activities. B: have an absolute advantage in both activities. C: be more productive per unit of time in both activities. D: gain from trade with each other.
- A<br/>given isotype of antibody is() A: A heavy chain variant encoded by allelic genes B: Genetic marker in different individuals within the species C: Present in all normal individuals in the same species. D: Epitopes located at the hypervariable region. E: Recognized by anti-idiotype antibody.
- 10.A/An______ ______ is any weapon system that requires a crew of two or more individuals performing the same or separate tasks to run at maximum operational efficiency.
- What is synonym ? A: A name is shared by two or more species of plants B: A name is for a species of plants only C: A species of plants has two or more different names D: A species of plants has one Latin name only
- Over the last century, paleontologists have used small differences between fossil specimens to classify Triceratops into sixteen species. This classification is unjustified, however, since the specimens used to distinguish eleven of the species come from animals that lived in the same area at the same time. Which of the following, if true, would enable the conclusion of the argument to be properly drawn A: Not every species that lived in a given area is preserved as a fossil. B: At least one individual of every true species of Triceratops has been discovered as a fossil specimen. C: No geographical area ever supports more than three similar species at the same time. D: In many species, individuals display quite marked variation. E: (E) Differences between fossil specimens of Triceratops that came from the same area are no less distinctive than differences between specimens that came from different areas.