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Quiz 174
Mdcat-past-papers Quiz
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3461. The incorrect statement regarding crossing over is:
produces recombinant genes
Occur during prophase of meiosis-1
tightly linked genes can easily crossover
if distance between linked genes increases recombinant frequency also increases
3462. If we cross round (RR) seeded plants with wrinkled seed plant and get F1 round seeded.In F2 generation, What will be genotypic ratio of plants by punnet square method?
3:01
1:01
2:01
1:01:02
3463. To check the homozygosity or heterozygosity of apparently dominant trait, we do the test cross by crossing it with:
Any dominant trait
Homozygous recessive trait
Homozygous dominant trait
heterozygous dominant trait
3464. The total number of genes present in a particular population, at a particular time is called:
Gene
genotype
genome
Gene Pool
3465. All chromosomes other than sex chromosomes are:
autosome
sex chromosome
Histone
nucleosome
3466. When both the alleles of a gene pair are same, the organism is said to be:
Homozygous
Genotype
Heterozygous
Phenotype
3467. What will be the probability of purple and terminal flower in Pea Plant in F2 generation, if we cross true breeding purple axial flower plant with white terminal flower plant.
16-Jan
16-Mar
16-Sep
½
3468. The structures which are reduced during the course of evolution and have no apparent function are called:
Regenerated organs
Vestigial organs
saltatory organs
useless organs
3469. According to the theory of natural selection ,organisms produce:
More offspring than supported
Less offspring than supported
Offspring according to the resources available
Offspring to create resources
3470. Adaptations that an organism acquires by its own actions during its life span without modifying its genome are:
Heritable
Non-heritable
Can be made heritable through some modifications
sometimes heritable and other times non-heritable
3471. For evolutionary process to occur, Which of the following is NOT a geographical barrier?
Oceans
River
Mountains
Atmosphere
3472. The animal species on Galapagos resemble species living on the:
Northern Europe
Great Britain
North American mainland
South American mainland
3473. According to evolutionary studies , prokaryotes may have arisen around :
3.5 billion years ago
4.5 billion years ago
2.5 billion years ago
5.5 billion years ago
3474. Which of the following type of organs are supposed to be functional in ancestral species than in present day species:
Vestigial organs
Homologous organs
Analogous organs
embryonic organs
3475. Evolution is the transformation & mode of existence of an organism in such manner that the descendants differ from their ancestor, according to?
Weismann
Darwin
Lamark
Zimmermann
3476. Carolus Linnaeus was the believer of:
Catastrophism
Natural selection
inheritance of acquired characters
Special creation
3477. All the given entities are created by God, the theory named as:
Theory of natural selection
Theory of inheritance of acquired characters
Theory of survival of fittest
Theory of special creation
3478. He presented the theory of origin of species by means of natural reaction.
Lamarch
Linnaeus
Hardy-Weinberg
Darwin
3479. Among the oldest known fossils comes the:
Prokaryotes
Amphibians
Reptiles
Fishes
3480. Which statement is not correct for the Darwin's theory of natural selection?
Survival in the struggle for existence is random
The fit individuals leave more off springs into their environment
the unequal ability of individuals to survive and reproduce will lead to a gradual
Accumulation over the generations thus leading to the evolution of a new species
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