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Which type of selection is a suitable example for industrial melanism? (Directional selection/Disruptive selection/ Facultative Selection)

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Important Questions on Evolution

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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
A bird species X is restricted to Narcondam island (NI) in Andaman and bird species Y is restricted to Middle Andaman Islands (MAI). NI has an area of 8 km2 and MAI has an area of 1500 km2. Based on the fossil record, a researcher found a common ancestor of species X and Y in Myanmar, which had a long and pointed beak. Almost all members of the population of species X have a long and pointed beak that is specialized to feed larvae of the beetle Wallace, found only on coconut trees in NI. Most population of species Y either have a very short and blunt beak to break open nuts or long and blunt beak to feed on small lizards. Very rarely members of species Y are found with long pointed beaks. Given this scenario, choose the correct statement from the following.
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle

Mention the factors that could lead to the rise of a new species.

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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
Discuss the role of different patterns, of selections in evolution.
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
Industrial melanism is an example of:
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle

Study the following and pick up the correct combinations:

S.NO List -1 List-2 List -3
I. Anagenesis Divergent evolution One species diverges into two or more species
II. Cladogenesis Phyletic evolution Evolution of a new species in single lineage
III. Gradualism Charles Lyell Earth has changed slowly through ages
IV. Biogenesis Louis Pasteur Living organisms originate from preexisting forms
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
Which of the following structures is homologous to the wing of a bird?
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
Define 'Species'. What are the important factors leading to the rise of a new species?
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
A human population containing 200 individuals has two alleles at the 'T' locus, named T and t. T, which produces tall individuals, is dominant over t, which produces short individuals. If the population has 90 TT, 40 Tt and 70 tt genotypes, what will be the frequencies of these two alleles in this population?
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
The bill sizes in a bird species of seed crackers from West Africa shows a bimodal distribution. Their most abundant food sources are two types of marsh plants that produce hard and soft seeds, consumed preferentially by the large and small billed birds, respectively. This bimodal distribution of bill sizes is a likely consequence of
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
During the course of evolution, the process by which the characteristic features of the members of a species modify due to the influence of various factors and thus give rise to the organisms with new characteristic features is called
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
The wings of a bird and the wings of an insect are:
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
In a species, the weight of the newborn ranges from 2 to 5 kg. 97% of the newborn with an average weight between 3 and 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 to 5 kg die. Which type of selection process is taking place?
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
A population will not exist in Hardy-Weinberg equilibrium if:
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
Analogous structures are a result of:
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by:
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
In a large isolated population, alleles p and q at a locus are at Hardy Weinberg equilibrium. The frequencies are p=0.6 and q=0.4 . The proportion of the heterozygous genotype in the population is
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle

Of the periods listed below, which ONE is the earliest period when Ostracoderms, the jawless and finless fishes, appeared?

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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
What would you understand by geographical isolation? Will this be a major factor in the speciation of a self-pollinating plant species? Why or why not?
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
In a population of plants, some were extremely tall and the remaining were extremely dwarf. No plants of the population showed intermediate height. The type of operation of natural selection in the above case is
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Biology>Genetics and Evolution>Evolution>Hardy Weinberg's Principle
Artificial selection to obtain cows yielding higher milk output represents