You are about to be sent to a remote area by WHO where you will be working with infectious diseases caused by a variety of microorganisms. You will be using what you know about the chemistry underlying biological processes in microbes and infections to solve the case on Rabbit Island. What will you need to know

Pathology of any infectious disease required some basic information to understand the biology and physiological process of the microbes, these information are given as follow:

Mode of pathogenesis

range of the affected organ or tissues

The incubation period, latent period and extent of infection

Physiological change in the infected organ or tissue

Doubling time of microbe in the host

The resistance and sensitivity of microbe against antibodies

Co-infection if any.

the corpus luteum secretes estrogens and progesterone. the latter hormone causes changes in the uterus that make it more suitable for implantation of the fertilized ovum and the nourishment of the embryo. if the egg is not fertilized, the corpus luteum becomes inactive after 10–14 days, and menstruation occurs.

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he forelimbs below belong to four species that descended in a direct line from the ancestral mammal shown above. of the four descendants shown, which species most likely appeared earliest in evolutionary history?