Q. No.The differential success in the reproduction, of an organism, in a given environment, is :
1. Adaptation 2. Natural Selection 3. Adaptive radiation 4. Saltatory evolution
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A small population experiences a sudden crash in size due to a natural calamity. The biggest threat to the population is:
1. loss of genetic variability
2. tendency towards assortative mating
3. reduced gene flow
4. Hardy - Weinberg disequilibrium
What exactly does the nature act upon when selecting an organism?
1. dominant alleles
2. recessive alleles
3. phenotype
4. combined genotype
Identify the incorrect statement:
| 1. | Neanderthals lived between 1,50,000 and 1,00,000 years back. |
| 2. | Modern Homo sapiens arose between 75000 and 10000 years ago. |
| 3. | Pre-historic cave art developed around 18000 years ago. |
| 4. | Agriculture came around 10000 years ago. |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
Which of the following would be an example of a population that can show the potential for rapid speciation?
1. small in number but highly variable gene pool
2. large in number with large variations in the gene pool
3.sexual dimorphism amongst members
4.isolated inbred population
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
A population geneticist finds that a new allele in a population has suddenly increased in frequency. Most likely this allele is:
1. mutating rapidly
2. flowing with emigrants
3. strongly selected for
4. a product of assortative mating
Which of the following types of natural selection reduces variation but does not change the mean value?
| 1. | directional | 2. | stabilizing |
| 3. | disruptive | 4. | all of these |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
In modern terms, selection refers to :
1. inheritance of dominant characters
2. differential reproduction
3. a decrease in allele frequency in a population
4. differences in the contribution of various genotypes to the next generation
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
An island population faced a natural calamity and the population crashed to only 30 organisms. After some time the number of organisms grew to 5000 but still the threat of extinction is large. This is most likely due to:
| 1. | Founder effect | 2. | Bottleneck effect |
| 3. | Edge effect | 4. | Heterosis |
The number of individuals expressing the dominant phenotype in a population of 200 is 182. What is the frequency of the dominant allele in this population?
| 1. | 9 % | 2. | 30 % |
| 3. | 91 % | 4. | 70 % |
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
To unlock all the explanations of 38 chapters you need to be enrolled in MasterClass Course.
© 2024 GoodEd Technologies Pvt. Ltd.