Micropipettes and gene guns are mechanical vectors that introduce recombinant DNA directly into the cell’s <u>nucleus of a host cell</u>.
<h3><u>Explanation</u>;</h3>
<em><u>Micropipettes are used to transfer very small and exact volumes of liquids in either milliliters or microliters, which are the measurements of volume most often used in genetic engineering.</u></em>
Microinjection is the process of using micropipette to inject liquid substances at microscopic level.
<em><u>The process is used to introduce a vector into a single cell in recombinant DNA technology. It may also be used in cloning of organisms. </u></em>
A) a common ancestor Homologous structures are structures that are similar in related organisms. There is a basic pattern of bones which can be inherited from a common ancestor