Genetic drift
Important Questions on Evolution
Select the correct statement(s).
(i). Microbial experiments show the pre-existing advantageous mutations when selected will result in the observation of new phenotypes. Over few generations, this would result in speciation.
(ii). Neanderthal fossils represent a human relative.
(iii). In A fish caught in South Africa happened to be a coelacanth (lobe fins) which was thought to be extinct. These animals evolved into the first amphibian living on both land and water.
(iv). Lichens can be used as pollution indicators.
(v). Alfred Wallace, a naturalist, who worked in Malay Archipelago (present Indonesia) has also come to similar conclusion on natural selection as reached by Darwin.
Read the following three statements (i - iii) and mark the right option.
(i). The thorns in Bougainvillea and tendrils in cucurbits represent divergent evolution.
(ii). The similarity in the eyes of Octopus and monkeys is the result of convergent evolution.
(iii). The potato and sweet potato are the examples of homology.
Given below are four statements (i-iv) each with one or two blanks. Select the option which correctly fills up the blanks in two statements.
(i) Wings of butterfly and birds look alike and are the results of _________ ________ ,evolution.
(ii) Miller showed that and ______ ________, when exposed to electric discharge in a flask resulted in formation of ______ _____.
(iii) Vermiform appendix is a ______ ______ organ and an _______ ______ evidence of evolution.
(iv) According to Darwin evolution took place due to _______ ______ and ______ ______ of the fittest.
Following diagram provides an example of
Following is the diagrammatic representation of the operation of natural selection of different trail. which of the following options correctly identifies all the three graphs and
