Answer:
logging, and oil exploration
Explanation:
DNA ligase <span>s responsible for creating the covalent bonds that connect the sugar phosphate backbone of the new DNA molecules</span>
Answer:
B. It allows for genetic variation.
Explanation:
As prophase progresses, homologous chromosomes come to lie side by side and become intertwined rather like a zipper. This process is called synapsis. During synapsis, homologous chromosomes exchange genetic material between one another which allows for genetic variation. This exchange is called crossing over.
For the first question, the age of each strip of rock is needed to determine the rate of seafloor spreading. The answer is B.
For the second question, the answer is A.
<span>Professor Kwang Jeon observed that some amoebas in his invaded amoeba colonies survived thanks to changes made by the invading bacterias. This comfirmed the endosymbiotic theory that organells are formerly invading free living prokaryotes forms that were integrated and swallowed by others to form a new living unit.</span>
