Biology, 17.06.2021 06:10 devinluck100
Tác nhân đột biến tác động vào quá trình nguyên phân của hợp tử, làm cho tất cả các cặp nhiễm sắc thể không phân li. Kết quả sẽ hình thành nên dạng đột biến nào sau đây?
Answers: 3
Biology, 21.06.2019 23:00, jacquicmoreland2106
Neelaredoxin is a 15-kda protein that is a gene product common in anaerobic prokaryotes. it has superoxide-scavenging activity, and it is constitutively expressed. in addition, its expression is not further induced during its exposure to o2 or h2o2 (silva, g., et al. 2001. j. bacteriol. 183: 4413–4420). which of the following statements best describes neelaredoxin synthesis? a-neelaredoxin is produced at all times; levels are constant even when exposed to o2 or h2o2.b-neelaredoxin is produced at all times; exposure to o2 or h2o2 increases expression. c-neelaredoxin is produced at all times; exposure to o2 or h2o2 decreases or prevents expression. d-neelaredoxin is only produced when there is exposure to o2 or h2o2.
Answers: 3
Biology, 22.06.2019 04:10, diamonds5307
How are the reproductive cycles of a fungus and a pteridophyte similar? a)both organisms form fruiting bodies that produce diploid seeds. b)both organisms produce haploid spores and exhibit diploid and haploid stages. c)both organisms reproduce sexually when two haploid hyphae fuse. d)both organisms exhibit a diploid stage and are only able to reproduce asexually.
Answers: 1
Tác nhân đột biến tác động vào quá trình nguyên phân của hợp tử, làm cho tất cả các cặp nhiễm sắc th...
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