Biology, 01.09.2019 11:30 hayleymckee
What happens after a mass extinction, such as an ice age or the extinction of the dinosaurs?
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Biology, 22.06.2019 00:00
Does masterbation affect height growth or loss of growth hormone?
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Biology, 22.06.2019 13:20
Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
Answers: 1
Biology, 22.06.2019 16:30
Aplant with dark red flowers is crossed with a plant with white flowers. all of the offspring have dark red flowers with white spots. the alleles got flower color in this plant are both dominant both recessive codominant incompletely dominant
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What happens after a mass extinction, such as an ice age or the extinction of the dinosaurs?...
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