Answer:
Scientists might replicate a strand of DNA using PCR before sequencing it. Once the sequence is known, they can produce a corresponding gene probe
Explanation:
PCR refers to the polymerase chain reaction that amplifies the small sample of DNA into multiple copies in three steps. These steps are denaturation of sample DNA to produce single-stranded template strand, binding of primer to the template and elongation. The multiple copies of the sample DNA are then used to decipher its sequence using various sequencing methods.
Once the sequence of the sample DNA is known, the short, single-stranded DNA molecules that are complementary to the specific sequence of DNA are formed. These single-stranded DNA molecules are called DNA probe and are used to detect the specific nucleotide sequence in some other sample DNA.
<span>comparative morphology
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Comparative morphology is the scientific study of organisms where their structures, physical entities and elements are identified to be similar or dissimilar. Using only simple basis of empirical observation, a scientist can detect whether two animals are of the same family or not.
Answer:
Endospores
Explanation:
Autoclaving is a sterilization method that involves the use of high temperature and pressure. In medical application, it is used for the sterilization of medical equipment and also used for vulcanizing rubber and curing coatings in the chemical industry.
Autoclaving process destroys living cells as well as bacterial endospores. Endospores are tough non reproductive structures produced by some bacteria. They have the ability to be dormant, hence can enable bacteria to survive environmental stress.
The right option is; b. detrital
Sandstone is a detrital sedimentary rock.
Sandstone is a detrital sedimentary rock that is made up of sand-sized mineral particles or rock fragments and is formed when pre-existing rocks are weathered by agents such as wind, water or ice. Sandstones usually contain quartz or feldspar due to their resistance to weathering processes and they may have any colour such as yellow, tan, brown, grey, white, and black.
Answer:
A voltage-gated ion channel
Explanation: