I also believe the answer is A.
<h3><u>Answer</u>;</h3>
D. The Peyer’s patches can release B cells to destroy Listeria
<h3><u>Explanation;</u></h3>
- The lymphatic system helps maintain fluid balance in the body by collecting excess fluid and particulate matter from tissues and depositing them in the bloodstream.
- It also helps defend the body against infection by supplying disease-fighting cells called lymphocytes.
- <u>The lymph contains a high number of a type of white blood cells called lymphocytes. These cells fight infection and destroy damaged or abnormal cells</u>.
Answer:
Allele. An allele is a viable DNA (deoxyribonucleic acid) coding that occupies a given locus (position) on a chromosome. ... An organism in which the two copies of the gene are identical — that is, have the same allele — is called homozygous for that gene.