Answer: topoisomerases
Explanation:
Topoisomerases are enzymes that help overwind or underwind DNA. DNA double helix has high tedency to get winded again because of its structural characeristics.
During replication and transcription of DNA, DNA gets overwound in front of a replication fork. This enzyme stops the double helix of DNA from becoming too tightly bound in front of the replication fork as the DNA opens.
The given demonstartion shows the action of topoisomerases as it shows unwinding of of supercoiled strands of pipe (DNA), which is don eby topoisomerases in the DNA replication process.
Hence, the correct answer is topoisomerases.
Answer:
Characteristics are determined by factors that are passed from one parental generation to the next. 1) An individual's characteristics are determined by the factors that are passed from parent to child (genes). 2) Some alleles are dominant & others are recessive.
Explanation:
have a good day
Collect a secret testing sample, such as a toothbrush, hair or ear wax for one or both of the tested parties. If available, collect mouth swabs from one of the tested parties. iTest DNA will compare the DNA on these samples for paternity. Test results are not legally admissible. hope it helps !
Answer:
The correct answer will be option-F.
Explanation:
The DNA transformation is the horizontal transfer of DNA in which the DNA is taken up by the competent bacterial cells from the surrounding.
The transformation process was studied by the Griffith in 1928 in <em>Streptococcus pneumoniae</em>- R and S- strains in which R-strain bacteria took the DNA from the surrounding environment and became S-strain.
The cells become competent by changing their cell wall composition and take DNA after which the DNA gets integrated with the genome of the bacteria through homologous recombination. The bacteria thus acquires the new feature as a result of this integration with genome which is transferred to the offsprings.
Thus, option-F is the correct answer.
