#Question id: 16204
#Section 2: Evolution
#Question id: 3427
#Section 2: Evolution
Natural selection can alter the frequency of distribution allele and heritable trait in different following way
A- Accumulation of those mutation that increase fitness of population in changing environment
B- Check accumulation of mutation that lower the fitness of species in unchanging environment
c- occur when population is subjected to divergent selection
#Question id: 3425
#Section 2: Evolution
Many evolutionary forces are operating in population. In study, within population increase genetic variation due to -----A-----while decrease genetic variation due to ------B-----. Between populations increase genetic variation due to -----C-----while decrease genetic variation due to ------D-----.
#Question id: 3423
#Section 2: Evolution
Following statement regarding divergent evolution?
A- Spreading of same species to different and isolated environments which blocks the gene flow among the distinct populations
B. vertebrate limb of whale and elephant is one example of divergent evolution
C- Both orthologous genes and paralogous genes can be said to display divergent evolution
D- Sympatric speciation leads to divergence of one species in to two are more descendant species
Which of the following combination of above statement are correct?
#Question id: 3422
#Section 2: Evolution
Micro-evolution is the term used for changes in allele frequencies that occur over time.
A) It gives rise to changes in the gene pool, which results in few changes in the same species
B) It occur above species level
C) New addition, deletion in the genetic structure, resulting in the formation of new species
D) It changes occurs over short time scales
Which of the following combinations is correct?
#Question id: 3420
#Section 2: Evolution
Following are key points about the effect of genetic drift:
A. Genetic drift is significant in small populations.
B. Genetic drift can cause allele frequencies to change in a pre-directed way.
C. Genetic drift can lead to a loss of genetic variation within populations.
D. Genetic drift can cause harmful alleles to become fixed.
Which one of the following combination of the above statements are true?