Biology, 23.07.2019 01:30 LaToyaShante1228
Aperson with down syndrome has an additional #21 chromosome in every somatic cell. this condition is also called trisomy 21. the cause of this syndrome
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Biology, 21.06.2019 14:00
Ahypothesis that has been tested again and again , with similar results each time may become a law , true or false
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Biology, 21.06.2019 20:00
Read the following scenario to answer the following question. over the past 60 years, many amphibian species have experienced significant population declines, and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. when most populations of a wide-ranging amphibian species are lost and the few remaining populations are widely separated, we expect to see that a. the founder effect becomes increasingly important b. microevolution no longer occurs c. gene flow between populations is reduced d. artificial selection becomes a greater factor in microevolution
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Biology, 22.06.2019 06:30
Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?
Answers: 3
Biology, 22.06.2019 10:50
Which of the following was not a major animal on land during the carboniferous period? amphibians insects both a and b none of the above
Answers: 1
Aperson with down syndrome has an additional #21 chromosome in every somatic cell. this condition is...
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