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In a population of 1000 individuals, 360 belong to genotype AA, 480 to Aa, and the remaining 160 to aa. Based on this data, which of the following is the correct frequency of allele A in the population?

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Important Questions on Organic Evolution

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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the Population?
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Biology>Organic Evolution>Organic 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>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
Artificial selection to obtain cows yielding higher milk output represents
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
Which one of the following are analogous structures?
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
The wings of a bird and the wings of an insect are:
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
The ________ theory attempts to explain to us the origin of the universe.
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Biology>Organic Evolution>Organic 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>Organic Evolution>Organic 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>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
A population will not exist in Hardy-Weinberg equilibrium if:
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by:
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Biology>Organic Evolution>Organic 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>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
Which of the following structures is homologous to the wing of a bird?
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
Darwin's finches are a good example of:
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
In a population of 1000 individuals 360 belong to genotype AA, 480 to Aa, and the remaining 160 to aa, Based on this data, the frequency of allele A in the population is:
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
The phenomenon of evolution of different species in a given geographical area starting from a point and spreading to other habitats is called:
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle

Statement I: Organs which have similar structure and origin but perform different functions are called analogous organs.
Statement II : The sudden appearance of some vestigial organs in a better developed condition is called atavism

The correct option among the following is

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Biology>Organic Evolution>Organic 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>Organic Evolution>Organic 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>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
Industrial melanism is an example of:
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Biology>Organic Evolution>Organic Evolution>Hardy Weinberg's Principle
Analogous structures are a result of: