Genes for histones seem to have no introns.
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.
- I __________ have caught a cold. A: seem B: look C: seem to D: seem like
- Yeast mutants that are defective in their ability to complete cell division have led to the discovery of many genes that control the cell-division cycle—the so-called Cdc genes—and have provided a detailed understanding of how these genes, and the proteins they encode, actually work.
- If two genes from a parent cell are on the same chromosome, which of the following best explains why the daughter cells may not have the same alleles as the parent for both genes? A: they are linked genes B: they are unlinked genes C: crossing-over D: genetic mutation
- What effect does eating genetically modified foods have on your genes （） A: It could cause your own genes to mutate B: It could cause your own genes to absorb the excess genes C: It has no effect on your genes D: The effects on human genetics aren't known