During the Paleocene-Eocene Thermal Maximum (PETM) 55.8 million years ago a significant amount of carbon was released into the ocean and atmosphere in a relatively short amount of time (less than 10,000 years). Based on the evidence from fossilized plant leaves in Bighorn Basin in Wyoming, which of the following happened in that region during the PETM? Select all that apply.
Rainfall decreased
Air temperature increased
Air temperatures decreased
Plants with smooth-edged leaves which are better adapted to warmer climates became more abundant
Rainfall increased causing the forest in the region to convert to a sub-tropical rain forest
Answers: 3
Biology, 22.06.2019 15:40
During crossing-over, a. genetic material is exchanged between nonsister chromatids, resulting in new combinations of alleles. b. nonsister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. c. one homologous chromosome of a tetrad is exchanged with another tetrad, resulting in new combinations of alleles. d. sister chromatids from each homologous chromosome of a tetrad are exchanged, resulting in new combinations of alleles. e. genetic material is exchanged between sister chromatids, resulting in new combinations of alleles.
Answers: 1
Biology, 22.06.2019 16:30
Tay-sachs disease is caused by a mutation in the hexa gene located on chromosome 15. tay-sachs follows an autosomal recessive pattern of inheritance. with the of the diagram, identify which of the offspring will be an unaffected carrier. a diagram showing the genes of parents who are carriers of tay-sachs disease a. a, b, and c b. b and c c. a and d d. a e. d
Answers: 1
During the Paleocene-Eocene Thermal Maximum (PETM) 55.8 million years ago a significant amount of ca...
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