Answers: 1
Biology, 21.06.2019 18:30
The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.
Answers: 3
Biology, 21.06.2019 20:00
Arrange the following in the correct sequence, from earliest to most recent, in which these plant traits originated. 1. sporophyte dominance, gametophyte independence 2. sporophyte dominance, gametophyte dependence 3. gametophyte dominance, sporophyte dependence a) 1 β 2 β 3 b) 2 β 3 β 1 c) 2 β 1 β 3 d) 3 β 2 β 1 e) 3 β 1 β 2
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Biology, 22.06.2019 08:00
In a vegetable garden 45 bean plants have been eaten by deer 5 are untouched what is the frequency of bean plants in the garden that have been eaten?
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Biology, 22.06.2019 12:40
In which part of the body is a ball-and-socket joint found?
Answers: 2
True or false if a plant grows toward the stimulus it shows a negative tropism...
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