Question # 1

Genetic basis of ABO blood group system was explained by:

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Landsteiner

Levine

Bernstein

Carl Correns

An exchange of segments between non-sister chromatids of homologous chromosomes during meiosis is termed as

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Crossing over

Hopping

Taking over

Segregation

Endangered plant species have been recorded to more than:

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600

400

500

300

Gene pool consists of all alleles at all gene loci in all individuals of the:

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community

species

population

family

The idea of inheritance of acquired characteristics was presented by

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Margulis

Lamarck

Linnaeus

Cuvier

Darwin proposed a mechanism for evolution, which he termed

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Natural selection

Special reaction

Adaptation

Descent with modification

Eukaryotes are thought to hve evolved firstly about:

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1.3 billion year ago

1.5 billion year ago

1.7 billion year ago

1.2 billion year ago

Normal fruit flies have

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White eyes

Bright red eyes

Light red eyes

Black eyes

Lamarck published his theory of evolution in

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1822

1812

1817

1809

The first person who argued from evidence that species were not created in their present form rather they had evolved from ancestral species was

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Aristotle

Lamarck

Darwin

Mendel

Lamarck was incharge of invertebrate collection at Natural History Museum is

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Berlin

Paris

California

Brun

Tritanopia is blindness of :

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Red Colour

Green Colour

Blue Colour

Pink Colour

Population is a localized group of individuals belonging to :

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same species

different species

same community

same stand

According to Darwin descent with modification means

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Same ancestor

Same characters

Different ancestors

Different characters

Ultimate source of all changes is :

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Mutation

Genetic drift

Evolution

Migration

Rh factor or antigen was first studied in :

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Man

Owl

Monkey

Fish

Allele for whiteness in Drosophilla is

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Recessive

Codominant

Dominant

Partially dominant

Which of the following cross is carried to check the genotype fo an individuals showing a dominant phenotype ?

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Check cross

Test Cross

Criss Cross

Self Cross

The processes that have transformed life an earth form its earliest forms to the vast diversity that we observe today, are collectively referred as :

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Evolution

Succession

Revolution

All of above

Which of the following cross is carried to check the genotype of an individual showing a dominant phenotype

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Check cross

Test Cross

Criss cross

Self cross

What is the risk of a colour blind child in a family when mother is colour-blind but father is normal?

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100%

75%

50%

25%

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