Crop breeding is called "evolution under artificial control". What are the basic elements of species evolution ().
A: Variation
B: Stability
C: Inheritance
D: Selection
A: Variation
B: Stability
C: Inheritance
D: Selection
举一反三
- What is the basis of biological evolution A: have a common ancesto B: struggle for existence C: Overproduction D: genetic variation
- The following types of macroevolution are: A: Specialized evolution B: Simplified evolution C: Evolution at the subspecies level D: Complex evolution
- The following are not the basic elements of control ( ) A: Control subject B: Given conditions and objectives C: Controlled object D: Control system
- One way to define _____ is any change in allelic frequencies within a population. A: mutation B: natural selection C: equilibrium D: evolution E: sampling error
- Karl Marx in his “scientific socialism” tries to tell us about ____________. A: evolution of species B: human population C: capitalist society D: capital accumulation