Biology, 03.07.2019 09:30 bryantnaomi6
Which of the following best describes the climates of europe and north america during the 1.8 million years of the quaternary period? a. hot and dry b. cool and rainy periods followed by droughts c. warm and mild d. a series of ice ages followed by periods when the glaciers melted.
Answers: 1
Biology, 21.06.2019 23:00
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 β 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 β especially cells from the crumbly dftd tumors β 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 01:00
Which of the following would be a body response when stepping outside without a coat on a snowy day? a. senaceous glands. secrete more senum b. more liquid is transported by the body to the skin fir insulation c. blood vessels in the skin narrow and contract d. blood vessels in the skin expand
Answers: 1
Biology, 22.06.2019 03:30
If assuming tasting ptc as a simple gene trait,what other genotype would you select to put in this missing genotype box that could result in this phenotype
Answers: 3
Which of the following best describes the climates of europe and north america during the 1.8 millio...
Computers and Technology, 11.07.2019 14:00
Mathematics, 11.07.2019 14:00
Mathematics, 11.07.2019 14:00
Mathematics, 11.07.2019 14:00
Mathematics, 11.07.2019 14:00
History, 11.07.2019 14:00
English, 11.07.2019 14:00
Mathematics, 11.07.2019 14:00
History, 11.07.2019 14:00