185105
Which mechanism of evolution affects the genetic makeup in a population?
1 Natural selection
2 Adaptation
3 Genetic drift
4 Gene mutation
Explanation:
Genetic drift :- Genetic drift is the change in frequency of an existing gene variant in a population due to random chance. Genetic drift affects the genetic makeup of the population.
J and K CET-2014
Evolution
185108
The concept of genetic drift was introduced by:
1 Sewall Wright
2 Hardy Weinberg
3 Julian Huxley
4 G.G. Simpson
Explanation:
The concept of genetic drift was introduced by Sewall Wright. Genetic drift is the change in the gene frequency in a population by a chance event. The effects of genetic drift are more profound in a smaller population. A smaller population already has reduced gene pool. Loss of alleles from a smaller population will more profoundly be noticeable within a less time duration. This leads to change in the allele frequencies randomly.
Punjab MET-2011 / Karnataka CET-2003
Evolution
185110
Darwinian fitness is lowered from minimum to zero, to check the undue accumulation of deleterious mutations by:
1 directional selection
2 normalizing selection
3 cladogenesis
4 phyletic change
Explanation:
Normalizing selection :- The removal of those alleles that produce deviations from the average population phenotype by selection against all deviant individuals. Such selection will reduce the variance in subsequent generations, also called stabilizing selection.
AP EAMCET-2002
Evolution
185114
Random genetic drift in a population leads to
1 highly genetically variable individuals
2 increased inbreeding within a population
3 constant low mutation rate
4 large population size
Explanation:
Increased inbreeding within a population Random genetic drift is the change in the allele frequencies of a population due to chance. It can lead to the loss of genetic variation in a population, as well as the fixation of certain alleles Random genetic drift is not influenced by any selective forces, It can lead to the loss of genetic variation as certain alleles may lost from the population by chance.
185105
Which mechanism of evolution affects the genetic makeup in a population?
1 Natural selection
2 Adaptation
3 Genetic drift
4 Gene mutation
Explanation:
Genetic drift :- Genetic drift is the change in frequency of an existing gene variant in a population due to random chance. Genetic drift affects the genetic makeup of the population.
J and K CET-2014
Evolution
185108
The concept of genetic drift was introduced by:
1 Sewall Wright
2 Hardy Weinberg
3 Julian Huxley
4 G.G. Simpson
Explanation:
The concept of genetic drift was introduced by Sewall Wright. Genetic drift is the change in the gene frequency in a population by a chance event. The effects of genetic drift are more profound in a smaller population. A smaller population already has reduced gene pool. Loss of alleles from a smaller population will more profoundly be noticeable within a less time duration. This leads to change in the allele frequencies randomly.
Punjab MET-2011 / Karnataka CET-2003
Evolution
185110
Darwinian fitness is lowered from minimum to zero, to check the undue accumulation of deleterious mutations by:
1 directional selection
2 normalizing selection
3 cladogenesis
4 phyletic change
Explanation:
Normalizing selection :- The removal of those alleles that produce deviations from the average population phenotype by selection against all deviant individuals. Such selection will reduce the variance in subsequent generations, also called stabilizing selection.
AP EAMCET-2002
Evolution
185114
Random genetic drift in a population leads to
1 highly genetically variable individuals
2 increased inbreeding within a population
3 constant low mutation rate
4 large population size
Explanation:
Increased inbreeding within a population Random genetic drift is the change in the allele frequencies of a population due to chance. It can lead to the loss of genetic variation in a population, as well as the fixation of certain alleles Random genetic drift is not influenced by any selective forces, It can lead to the loss of genetic variation as certain alleles may lost from the population by chance.
185105
Which mechanism of evolution affects the genetic makeup in a population?
1 Natural selection
2 Adaptation
3 Genetic drift
4 Gene mutation
Explanation:
Genetic drift :- Genetic drift is the change in frequency of an existing gene variant in a population due to random chance. Genetic drift affects the genetic makeup of the population.
J and K CET-2014
Evolution
185108
The concept of genetic drift was introduced by:
1 Sewall Wright
2 Hardy Weinberg
3 Julian Huxley
4 G.G. Simpson
Explanation:
The concept of genetic drift was introduced by Sewall Wright. Genetic drift is the change in the gene frequency in a population by a chance event. The effects of genetic drift are more profound in a smaller population. A smaller population already has reduced gene pool. Loss of alleles from a smaller population will more profoundly be noticeable within a less time duration. This leads to change in the allele frequencies randomly.
Punjab MET-2011 / Karnataka CET-2003
Evolution
185110
Darwinian fitness is lowered from minimum to zero, to check the undue accumulation of deleterious mutations by:
1 directional selection
2 normalizing selection
3 cladogenesis
4 phyletic change
Explanation:
Normalizing selection :- The removal of those alleles that produce deviations from the average population phenotype by selection against all deviant individuals. Such selection will reduce the variance in subsequent generations, also called stabilizing selection.
AP EAMCET-2002
Evolution
185114
Random genetic drift in a population leads to
1 highly genetically variable individuals
2 increased inbreeding within a population
3 constant low mutation rate
4 large population size
Explanation:
Increased inbreeding within a population Random genetic drift is the change in the allele frequencies of a population due to chance. It can lead to the loss of genetic variation in a population, as well as the fixation of certain alleles Random genetic drift is not influenced by any selective forces, It can lead to the loss of genetic variation as certain alleles may lost from the population by chance.
185105
Which mechanism of evolution affects the genetic makeup in a population?
1 Natural selection
2 Adaptation
3 Genetic drift
4 Gene mutation
Explanation:
Genetic drift :- Genetic drift is the change in frequency of an existing gene variant in a population due to random chance. Genetic drift affects the genetic makeup of the population.
J and K CET-2014
Evolution
185108
The concept of genetic drift was introduced by:
1 Sewall Wright
2 Hardy Weinberg
3 Julian Huxley
4 G.G. Simpson
Explanation:
The concept of genetic drift was introduced by Sewall Wright. Genetic drift is the change in the gene frequency in a population by a chance event. The effects of genetic drift are more profound in a smaller population. A smaller population already has reduced gene pool. Loss of alleles from a smaller population will more profoundly be noticeable within a less time duration. This leads to change in the allele frequencies randomly.
Punjab MET-2011 / Karnataka CET-2003
Evolution
185110
Darwinian fitness is lowered from minimum to zero, to check the undue accumulation of deleterious mutations by:
1 directional selection
2 normalizing selection
3 cladogenesis
4 phyletic change
Explanation:
Normalizing selection :- The removal of those alleles that produce deviations from the average population phenotype by selection against all deviant individuals. Such selection will reduce the variance in subsequent generations, also called stabilizing selection.
AP EAMCET-2002
Evolution
185114
Random genetic drift in a population leads to
1 highly genetically variable individuals
2 increased inbreeding within a population
3 constant low mutation rate
4 large population size
Explanation:
Increased inbreeding within a population Random genetic drift is the change in the allele frequencies of a population due to chance. It can lead to the loss of genetic variation in a population, as well as the fixation of certain alleles Random genetic drift is not influenced by any selective forces, It can lead to the loss of genetic variation as certain alleles may lost from the population by chance.
