Answer:
The answer is letter C
Explanation:
The evolutionary mechanism most likely responsible for the difference between the two populations is natural selection.
Answer:
True.
Explanation:
Antigen may be defined as the chemical that has the ability to evoke the and immune response and can harm the living organisms. The specific antibody are produced against the immune response.
The antigens has evolved different mechanisms to prevent themselves from them the immune system of the host. The antigenic shift is the most common change that might occur in viruses that helps the antigen to protect itself by changing its genetic material. No anti viral drugs are available for the viruses.
Thus, the answer is true.
As estruturas morfológicas dos vírus HIV tipo 1 e 2 incluem proteínas estruturais e funcionais e um genoma de RNA protegidos pelo envelope viral. O envelope é constituído por uma bicamada lipídica e contém uma proteína complexa conhecida como env. Esta proteína é constituída pelas glicoproteínas gp41, transmembrana e gp120, Na face interior o HIV possui a proteína viral denominada p17 (matriz) e, envolvido por esta proteína, está o capsídeo composto pela p24. Na parte mais interna encontram-se os elementos mais importantes: dois filamentos simples de RNA, a proteína p7 (nucleocapsídeo) e três enzimas essenciais, p51 (transcriptase reversa), p11 (protease) e p31 (integrase). exposta à camada externa do envelope.
Answer:
Progesterone activates C-Mos, which phosphorylates maturation promotion factor (MPF)
Explanation:
Progesterone is a steroid hormone that is well known to be involved in embryogenesis, which is secreted by the corpus luteum. During meiosis I, steroid production is limited to progesterone. Moreover, the oocyte maturation factor Mos (cMOS) is kinase expressed in germ-line cells when it is activated by progesterone, where this factor controls oocyte maturation and the arrest at the metaphase of meiosis II by modulating the activity of the Maturation-promoting factor (MPF). This protein (MPF) is a cyclin-dependent kinase complex that promotes mitotic entry via phosphorylation of different proteins required during mitosis.
E. Sounds like all e are the same <span>E.I, II, and III</span>