Evolution - Online Test
Q1. What's the difference between genetic drift and change due to natural selection?
Answer : Option A
Explaination / Solution:
Genetic drift and change due to natural selection are different as genetic drift does not involve completion between the members of a species but in natural selection there is completion between members.
Q2. The age of rock is calculated on the basis of
Answer : Option C
Explaination / Solution:
The age of rock is calculated on the basis of number of strata present.Contained within the rock strata is evidence that the region was intensely dry 15,000 years ago. Having more number of strata means older the rock.
Q3. What's the difference between natural selection and sexual selection?
Answer : Option A
Explaination / Solution:
Natural selection is the survival of members of species having some new traits that may help the organism in given surrounding. Sexual selection is a kind of natural selection as mating between similar organisms only leads to reproduction.
Q4. Natural selection is a process in which heritable variations enabling better survival are enabled to
Answer : Option A
Explaination / Solution:
Natural selection is a process in which heritable variations enabling better survival are enabled to reproduce and leave greater number of progeny in the habitat to increase in number faster than other species.
Q5. Grow slower in new habitat is
Answer : Option D
Explaination / Solution:
Variation due to mutation or variation due to recombination during gametogenesis results in changed frequency of genes and alleles in future generation which results into stabilization and directional change in which more individual acquire mean character value.
Q6. Which of the following factors influence the Hardy-Weinberg equilibrium?
i. Gene migration
ii. Genetic drift
iii. Mutation
iv. Reproduction
v. Genetic recombination
i. Gene migration
ii. Genetic drift
iii. Mutation
iv. Reproduction
v. Genetic recombination
Answer : Option B
Explaination / Solution:
The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
These influences include mutation, selection, genetic drift, gene migration, gene flow, genetic recombination and meiotic drive.
Q7. Hardy-Weinberg principle states that allele frequencies in a population are stable and is
Answer : Option D
Explaination / Solution:
The Hardy–Weinberg principle, also known as the Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.
Q8. Which one is used for knowing whether or not a population is evolving?
Answer : Option D
Explaination / Solution:
Hardy-Weinberg equation is used to knowing whether or not a population is evolving or not. This equation is represented as
In the equation, p2 represents the frequency of the homozygous genotype AA, q2 represents the frequency of the homozygous genotype aa, and 2pq represents the frequency of the heterozygous genotype Aa.
Q9. Tendrils in plants are an example of
Answer : Option B
Explaination / Solution:
Convergent evolution is different structures evolving for the same function and hence having similarity. Analogous organs are example of convergent evolution. Tendril of plants is example of these kinds of evolution.
Q10. Disturbance in genetic equilibrium or Hardy-Weinberg equilibrium in a population is due to
Answer : Option C
Explaination / Solution:
Disturbance in genetic equilibrium in a population is due to evolution. Evolution occurs due to variation and natural selection. Variation is due to change in alleles.
