Introns are found in a few bacterial and archaeal genes.
对
举一反三
- Although spliceosomal introns seem to be limited to eukaryotes, the other three intron classes are not. Genes with group I and II introns have now been found in both bacteria and bacterial viruses.
- The SIM structure can realize the co-expression of genes, as well as the sequence expression of genes.
- 中国大学MOOC: A bacterial cell transfers chromosomal genes to F-cells, but it rarely causes them to become F+. The bacterial cell is:
- The SIM structure can realize the co-expression of genes, as well as the sequence expression of genes. A: 正确 B: 错误
- A bacterial cell transfers chromosomal genes to F- cells, but it rarely causes them to become F+. The bacterial cell is: A: Hfr. B: lysogenic. C: Auxotrophic. D: lytic.
内容
- 0
Linked<br/>genes are A: found<br/>on the same chromosome B: found<br/>in the same nucleus C: found<br/>only on sex chromosomes D: joined<br/>by a centromere
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Housekeeping genes are() A: not found in<br/>genomes. B: not<br/>expressed in cells. C: genes that<br/>produce essential products for the survival of an organism. D: need to be<br/>induced.
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For quite a few days the police found it difficult to _____ the body.
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They had talked only for a few minutes ________ they found they were of different opinions.
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why mammalian genomes are 100 times the size of bacterial genomes yet are replicated in just a few minutes. Which of the following best explains this fact?