Mutation Theory

Q. Single step large mutation is called

1. Evolution
2. Organization
3. Saltation
4. Regeneration

Q.

Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not.

Q. A sudden heritable change occuring in the genome is called whereas a sudden drastical change in phenotype leading to new species is called .

1. variation
2. speciation
3. mutation
4. saltation

Q. Adaptive convergence is the development of

1. randomly mating populations
2. common set of characters in closely related groups
3. dissimilar characters in closely related groups
4. common set of characters in groups of different ancestry

Q. The cellular pool consists of inorganic and organic molecules. In cellular pool, which of the following molecule occurs in non-aqueous phase?

1. Fragments of plasma membrane
2. Lipid membrane
3. Sugars
4. Both a and b

Q. Tasmanian wolf is a marsupial while wolf is a placental mammal. This shows

1. Convergent evolution
2. Divergent evolution
3. Inheritance of acquired characters
4. None of the above

Q. De Vries gave his mutation theory on organic evolution while working on

1. Oenothera lamarckiana
2. Drosophila melanogaster
3. Pisum sativum
4. Althara rosea

Q. Assertion: Chimpanzee is the closest relative of modern humans.

Reason: Humans and chimpanzees have the same banding pattern in chromosome and 99% of their genetic material are identical.

1. Both assertion and the reason are true and the reason is a correct explanation of the assertion
2. Both the assertion and reason are true but the reason is not a correct explanation of the assertion
3. Assertion is true but the reason is false
4. Both the assertion and reason are false

Q.

Darwin's theory does not include

1. Struggle for existence

2. Natural selection

3. Survival of the fittest

4. Evolution through inheritance

Q.

(a) Name the process that has resulted in evolution of wolf and Tasmanian wolf.
(b) Explain the process by which Tasmanian wolves evolved.
(c) Compare and contrast the two animals shown. [1+1+1]

Q. Find out the mismatched pair from the options given below.

1. Lemur - Flying phalanger
2. Bobcat - Tasmanian tiger cat
3. Wolf - Tasmanian wolf
4. Mouse - Marsupial mouse

Q. Which of the following is the most important precondition for speciation to occur?

Q. Hugo de Vries proposed mutation theory based on his experiments on

1. Drosophila melanogaster
2. Pisum sativum
3. Oenothera lamarckiana
4. None of these

Q. De Vries gave his mutation theory on organic evolution while working on

1. Pisum sativum
2. Althara rosea
3. Oenothera lamarckiana
4. Drosophila melanogaster

Q. De Vries postulated the theory of mutation by working on evening primrose.

1. True
2. False

Q. Mutation could lead to evolution and speciation.

1. False
2. True

Q. What are missing links ? Give one example.

Q.

Does evolution stop?

Q. Hugo de Vries proposed mutation theory based on his experiments on

1. Pisum sativum
2. Drosophila melanogaster
3. Oenothera lamarckiana
4. None of these

Q. Similarities in organism with different genotype indicates :

1. Macroevolution
2. Microevolution
3. Convergent evolution
4. Divergent evolution

Q.

Is genetics inconsistent with evolution theory?

Q. De Vries gave his mutation theory on organic evolution while working on

1. Oenothera lamarckiana
2. Drosophila melanogaster
3. Pisum sativum
4. Althara rosea

Q.

The title “Artificial Transmutation of Gene” by X-rays was published by

1. Morgan
2. Muller
3. Stadler
4. Hugo de Vries

Q. Mutations are always harmful.

1. False
2. True

Q. Match the evolutionary concepts listed under column I with the names of the scientists given under column II and select the right answer:
$\begin{array}{cccc}& ColumnI& & ColumnII\\ & Evolutionaryconcepts& & Namesofthescientists\\ A& Lawsofheredity& p& Wallace\\ B& Synthetictheory& q& Mendel\\ C& Mutationtheory& r& J.B.S.Haldane\\ D& TheoryofNaturalSelection& s& HugodeVries\\ & & t& Darwin\end{array}$

1. A = q, B = r, C = s, D = t
2. A = q, B = r, C = s, D = p
3. A = p, B = r, C = s, D = t
4. A = t, B = r, C = s, D = p

Q. "Ontogeny repeats phylogeny" was coined by

1. Darwin
2. Lamarck
3. Morgan
4. Haeckel

Q. A sudden heritable change occuring in the genome is called whereas a sudden drastical change in phenotype leading to new species is called .

1. variation
2. speciation
3. mutation
4. saltation

Q. Mutations are always harmful.

1. False
2. True

Q. Define saltation.

Q. Which of the following is not true for saltation?

1. Random

2. Gradual
3. Directionless
4. Large mutation