Answer: B. strong natural selection.
Explanation:
Speciation is the process by which new species form from the existing parent species. It occurs when the population of the species become reproductively isolated. In sympatric speciation the organisms living in the same geographical area becomes reproductively isolated due to changes in the behavior, morphology and genetic make up.
Among the option given, strong natural selection is the correct option. This is because of the fact that natural selection brings changes in the living being in terms of adaptation. The organism having better phenotypic trait will survive and reproduce. The beneficial traits will pass on to next generation may lead to evolution of new species. The members of the new species may not be able to breed with parent species.
The question is incomplete as it does not have the options which are:
a) DNA
b) AGCT
c) PCR
d) SNP
Answer:
PCR (polymerase chain reaction)
Explanation:
The polymerase chain reaction is the technique which replicates and produces multiple copies of the DNA molecule artificially in a short period of time.
The PCR technique employs a variety of enzymes and all the prerequisites which are required in the DNA replication in vivo conditions.
In the given question, if the genome of the mummy has to sequence then after the collection of samples from the bones, the DNA has to replicate through the process of PCR. The samples from the different bone structures can be compared and analysed and a complete genome sequence can be analysed.
Thus, PCR is correct.
Answer:
Option (1).
Explanation:
Saturated fatty acid may be defined as the fatty acid with the single bonds between the carbon atoms. The unsaturated fatty acid consist of double and triple bond in its structure.
The melting points differs between the saturated and unsaturated fatty acid. The saturated and unsaturated fatty acids have high difference in their melting point and this difference may changes as the double and triple bonds are increased or decreased in the fatty acid structure.
Thus, the correct answer is option (1).
Not including the variety generated by crossing over, 16
