Disructive selective usually acts to favourA. both extreme forms of a traitB. intermediate forms of a traitC. environmental differencesD. one extreme form over the other extreme form and over intermediate forms of a trait

Disructive selective usually acts to favourA. both extreme forms of a

1.	Disructive selective usually acts to favourA. both extreme forms of a traitB. intermediate forms of a traitC. environmental differencesD. one extreme form over the other extreme form and over intermediate forms of a trait
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Speciation as a smallseries of changes thataccumulate over time, ia known asA. punchuated eequilibriumB. cladisticsC. gradualismD. stasis
Sympatric speciation occurs most commonly inA. mammalsB. fishesC. plantsD. birds
Assertion Disruptive selection is the rarest form of selection Reason Disruptive selection leads to speciationA. Both Assertion and Reason are true, but Reason is the correct explanation of AssertionB. Both Assertion and Reason are true, but Reason is not the correct explanation of AssertionC. Assertion is true, but Reason is falseD. Assertion is false, but reason is true
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Industrial melanism is an example ofA. drug resistanceB. darkening of skin due to smoke from industriesC. protective resemblance with the surroundingsD. defensive adaptation of skin against ultraviolet radiations
All the members of a bird population have the same intermediate green colouration. What type of selection is likely to taking place?A. DisruptiveB. DirectionalC. StabilisingD. Natural
Stablising selection favours.A. both extreme of a trailsB. intermediate forms a traitC. environmental differencesD. one extreme form over the other extreme form and over intermediate forms of a trait
The total collection genes, at any time , in a unit of evolution is called theA. genotypeB. demotypeC. multiple allele groupD. dene pool
People who carry an allele for normal haemoglobin and an allele for sickle cell, are resistant to maleria. They are examples ofA. heterozygote advantageB. Extreme diploidyC. outbreedingD. recessive superiority
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Disructive selective usually acts to favourA. both extreme forms of a traitB. intermediate forms of a traitC. environmental differencesD. one extreme form over the other extreme form and over intermediate forms of a trait

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