Answer:the two types of white blood cells that are part of the body's immune system: bone marrow and release antibodies that fight bacterial infections; T lymphocytes form in the thymus and other lymphatic tissue and attack cancer cells, viruses, and ... Cells (also called adipose cells) that serve as storehouses for liquefied fat in
Explanation:
Answer:
They use less metabolic energy and they help the animal move faster.
<span>The body proportions of neanderthals may have arisen as adaptations to a HARSH AND CONTINUOUSLY CHANGING environment. Neanderthals that have evolved through millions of years have developed skills and techniques in order for them to eat, live in good conditions, and protect themselves from dangers of the environment. As such, their physical bodies have also evolved through the activities that they do on a regular basis.</span>
Answer: D) retroviruses
Explanation:
Retroviruses are a type of virus that converts its genetic material into DNA using a special enzyme, called reverse transcriptase. The DNA is then able to integrate into the DNA of the host cell. Once integrated, the virus can make additional viral particles using the components of the host cell.
Retroviruses which cause cancer at low incidence do not contain host information inserted. Rather, they tend to cause cancer via the expression mutation of potentially oncogenic host genes. Retroviruses incorporate proviral DNA into their host's chromosomal DNA during their natural life-cycle. Provirus DNA promoter affect regulatory gene expression over.
Hence, the correct option is D.
