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To describe:
The Tasmanian devil is a marsupial indigenous to the island of Tasmania, experienced a population bottleneck in the late 1800s. Unlike the immune system of other species, including humans, the Tasmanian devils immune system does not reject the distributed cells as non self or foreign, but it receives them as if they were their own cells. Why would a population bottleneck results in the inability of single devils immune system to identify another devils cells as foreign?
Introduction:
The current Tasmania devil population are plagued by a type of cancer called as devil facial tumor disease. It occurs inside the individuals mouths of animals. The devil facial tumor disease is an aggressive non-viral clonally cancerous. It affects Tasmania devils, a marsupial native to Australia. The affected Tasmania devils can actually pass their cancer cells from one animal to another through mating rituals. The most possible way of transmission is by biting, mainly when canine teeth came into contact directly with the diseased cells.
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Chapter 12 Solutions
Biology Now with Physiology (Second Edition)
- Identify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forwardIdentify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forward
- Identify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forwardWhat type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forward
- What specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forwardIdentify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forward
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