Answer:
Explanation:
S waves are more dangerous than P waves because they have greater amplitude and produce vertical and horizontal motion of the ground surface. The slowest waves, surface waves, arrive last. They travel only along the surface of the Earth. There are two types of surface waves: Love and Rayleigh waves.
Answer:
b. incomplete dominance
Explanation:
Incomplete dominance is a type of inheritance that does not confirm to Mendel's principles of inheritance i.e it is non-mendelian. Incomplete dominance occurs when an allele of a gene does not completely mask the expression of another allele of the same gene, hence, the two alleles combine to form a heterozygous that is different but intermediate of both parent phenotypes.
This is the case in this question where the red allele (R) of a four o'clock plant is INCOMPLETELY DOMINANT over the white allele (W), hence, they both produce an intermediate pink phenotype (RW), which is a blending of both red and white phenotypes.
Answer: The correct answer is option b.
Explanation:
RNA viruses have RNA as genetic material whereas the host cells usually have DNA as genetic material.
So, in order to integrate its genome with host DNA, the virus must form DNA from RNA, that is, reverse transcription.
It is the process by which DNA is formed using RNA as a template strand.
However, reverse transcriptase (enzyme which catalyzes reverse transcription) is usually not present in host cells.
Thus, RNA viruses carry their own set of enzymes which help in the replication of viral genome and its recombination with host DNA as host cells lack these enzymes.
