The evolution of insecticide resistance in insect populations is often cited as an example of natural selection. However, a counter-argument proposes that resistance pre-exists in a few individuals and simply becomes more frequent. Which observation MOST strongly refutes this counter-argument and supports the role of natural selection?
Insecticide resistance develops more rapidly in populations with high reproductive rates.
Resistant insects often exhibit reduced fitness in the absence of the insecticide.
The specific resistance mechanism, often a change in a target enzyme, arises independently in geographically separated populations exposed to the same insecticide.
The frequency of resistant insects decreases when insecticide application is stopped.
Related Questions
The theory that evolutionary change is slow and continuous this phenomenon is known as
Punctuated equilibrium
Geographic isolation
Speciation
Gradualism
Fossilized faecal material of animals are known as
Coprolites
Compressions
Moulds
Casts
Evolutionary convergence is the development of
Common set of characters in a groups of different ancestry
Dissimilar characters in closely related groups
Common set of characters in closely related groups
Development of characters by random mating
Which of the following branch of biology helps in to know the existence of coal?
Palaeobotany
Bacteriol ogy
Economic botany
Ecology
An organism which is the connecting link between the animals and plants is
Bacteria
Cyanobacteria
Euglena
Amoeba
Which of the following statements regarding the evolution of plants and animals is/are correct: I. Amphibians evolved into reptiles, II. Fish with stout and strong fins could move on land and go back to water. This was about 350 million years ago, III. Giants ferns fell to form coal deposits slowly, IV. About 65 million years ago dinosaurs died out, V. Archeopteryx is the connection link between birds and reptiles . The correct combination is
I and II
III and IV
V and I
I, II, III, IV and V
Read the statements and choose the option that states all the correct ones.
(i) Vertebrate hearts are example of homologous organs
(ii) Eye of octopus and mammals are analogous
(iii) Darwin's finches are examples of evolution by anthropogenic action
(iv) Evolution of modern man appears to be parallel evolution of human brain and language
(i), (ii) and (iv)
(i), (ii) and (iii)
(ii), (iii) and (iv)
(i), (iii) and (iv)
In Africa, there is a species of bird called the yellow-throated long claw. It looks exactly like the meadowlark found in North America, but they are not closely related. This is an example of
Uniformitarianism
Artificial selection
Gradualism
Convergent evolution
Which of the following branch of biology helps in to know the existence of coal?
Palaeobotany
Bacteriol ogy
Economic botany
Ecology
If two species possess similar bone structures in their forelimbs despite having different functionalities, what can be inferred about their evolutionary history?
They evolved independently.
They experienced convergent evolution.
They adapted to similar environments.
They share a common ancestor.
