Answer:
Nucleus
Explanation:
Nucleus is the most common cell that a animal will have.
Hope this helps:)
Pls mark brainliest
When the dsDNA copies are then inserted into vectors and cloned into E. coli. the scientist has produced a cDNA library.
A collection of DNA fragments that have been cloned into vectors to identify and isolate desired DNA fragments is known as the DNA library. cDNA libraries and genomic libraries are the two types of libraries.
cDNA (Complementary DNA )library: cDNA is a DNA copy of an mRNA molecule that is produced by reverse transcriptase, a DNA polymerase that can use RNA or DNA as its template.
- These are made by using mRNA as their starting material as templates.
- They only represent genes in the genome that are expressed under particular conditions.
- Because cDNA lacks introns, prokaryotic cells can express it.
Know more DNA libraries here: brainly.com/question/14233038
#SPJ4
Diffusion<span> in </span>cells<span>. Materials like oxygen, carbon dioxide and glucose enter and </span>leave cells by diffusion<span>. When a </span>cell<span> is respiring the concentration of oxygen and glucose inside the </span>cell<span> is lower than the surrounding blood so these </span>substances<span> move into the </span>cell<span>.
</span>
