Variation
Trending Questions
"Evolution should not be equated with progress". Why?
- variation
- heredity
- alleles
- speciation
- False
- True
Column IColumn IIp. Gene flowi. Transfer of alleles from one population to anotherq. Bottleneck effectii. A change in the frequency of alleles mainly due to chance eventsr. Founder effectiii. A sharp lowering of a population's gene pool due to natural disasterss. Genetic driftiv. A few members of the original population colonise a new location away from the old
- p-i, q-ii, r-iii, s-iv
- p-ii, q-i, r-iii, s-iv
- p-i, q-iii, r-iv, s-ii
- p-ii, q-iii, r-iv, s-i
What are marker genes used for?
Which of the following statements is true about variation?
Varaiations always produce survival advantages
Variations help in organic evolution
Variations do not produce biodiversity
Variations always produce harmful effects in a population
- divergent
- convergent
- branched
- linear
What Causes Evolution?
Select the statements that describe the characteristics of genes
(i) Genes are a specific sequence of bases in a DNA molecule (ii) a gene does not code for proteins
(iii) in individuals of a given species, a specific gene is located on a particular chromosome (iv) each chromosome has only one gene
(i) and (ii)
(i) and (iii)
(i) and (iv)
(ii) and (iv)
What are the Anatomical Evidences of Evolution?
What are the Anatomical Evidences of Evolution?
Explain giving an example of how the following provides evidence in favor of evolution in organisms. (i) Homologous organs (ii) Fossils
Who was Darwins coworker for Theory of Natural Selection?
Name the process/term for the following statements.
Evolution is related to living organisms.
The peppered moth experiment in which black moths become predominant over white moths during industrial revolution demonstrates phenotypic variation and natural selection
True
False
- Genetic drift
- Artificial selection
- Natural selection
From the pictures given below, state why are there are so many varieties in butterflies and chillies?
Mode of nutrition
Sexual reproduction
Temperature differences
Environment
The peppered moth experiment in which black moths become predominant over white moths during industrial revolution demonstrates _________ variation and natural selection
Phenotypic
Genotypic
Arial
Internal
- Phenotypic variation and natural selection.
- Natural selection.
- None of these.
- Genotypic variation.
- Analogous
- Natural Selection
- Genetic Drift
Match the following:
Column IColumn IIp. Gene flowi. Transfer of alleles from one population to anotherq. Bottleneck effectii. A change in the frequency of alleles mainlydue to chance eventsr. Founder effectiii. A sharp lowering of a population’s genepool due to natural disasterss. Genetic driftiv. A few members of the original populationcolonise a new location away from the old
- p-i, q-ii, r-iii, s-iv
- p-ii, q-i, r-iii, s-iv
- p-i, q-iii, r-iv, s-ii
- p-ii, q-iii, r-iv, s-i
- variation
- evolution
- speciation
The accumulation of favourable variations led to the appearance of new_______.
The peppered moth experiment in which black moths become predominant over white moths during industrial revolution demonstrates phenotypic variation and natural selection
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
- Assertion is correct but Reason is incorrect.
- Assertion is incorrect but Reason is correct.
- Both A and B
- Alcohol
- U.V. rays
- X rays
- Phenotypic variation and natural selection
- Genotypic variation and mutation
- Phenotypic variation and mutation
- Genotypic variation and natural selection
The peppered moth experiment in which black moths become predominant over white moths during industrial revolution demonstrates phenotypic variation and natural selection
True
False
- True
- False