Which of the following describes the process of adaptive radiation?
random changes occu...
Biology, 01.10.2019 04:50, odalysesquermon
Which of the following describes the process of adaptive radiation?
random changes occur in the genes or chromosomes of an orgnism.
organisms move from one location to another without returning.
organisms are separated from members of their species by rivers or mountains.
a species changes to fill many niches in an area.
Answers: 2
Biology, 21.06.2019 23:00, gthif6088
The tasmanian devil, a marsupial carnivore, is facing extinction due to devil facial tumor disease (dftd) which causes bulging cancerous lumps and lesions to erupt around the face and neck — often causing enough deformation to make seeing or eating difficult. dftd has evolved into a contagious cancer, a trait that is unique among cancers. devil mating behavior involves biting around the head and neck, allowing cells from one individual — especially cells from the crumbly dftd tumors — to be transferred to the wounds or face of a new individual. this marsupial was once found across australia, but sea levels rose, isolating the tasmanian population, while the australian population went extinct. what would be an outcome of genetic isolation that is likely to have impacted the spread of dftd? a) reduced territory puts diseased individuals in greater contact with non-diseased ones. b) inbreeding results in less variation in facial features so the cancer is generally fatal. c) genetic isolation has made it difficult for scientists to develop a vaccine against dftd. d) the lack of genetic variation in the immune system of tasmanian devils minimizes resistance to the disease.
Answers: 3
Biology, 22.06.2019 05:30, joshuajoseph249
Which gas found in the earth's atmosphere greatly impacts the daily range of temperature on earth. a) oxygen b) hydrogen c) nitrogen d) water vapor
Answers: 1
Biology, 22.06.2019 10:00, AM28
Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
Answers: 2
Chemistry, 16.04.2021 01:30
Mathematics, 16.04.2021 01:30
Mathematics, 16.04.2021 01:30
Mathematics, 16.04.2021 01:30
Biology, 16.04.2021 01:30
History, 16.04.2021 01:30
Mathematics, 16.04.2021 01:30