C
in the first paragraph a fact is challenged
and the second one provides an example
versatile cas12k-based genetic engineering toolkit (c12kget)
- Genetic modification of micro-organisms is conducive to the selection of high production producers of high-value-added chemicals, but a deficient of genetic tools limits the industrialization of most wild species
- It is very important to develop host-independent gene editing tools which can be used for genetic modification deprived strains.
- A easily found Cas12k-based genetic engineering toolkit (C12KGET) that can result into genomic integration of small parts up to 10 kb in size with up to 100% efficiency in challenging strains.
- By using C12KGET, we accomplished the first example of highly efficient genome editing in Sinorhizobium meliloti, which was successfully solved the question of that industrial strains are difficult to genetically modify, and increased vitamin B12 production by 25%.
- Cas12k can be directly used for transcriptional regulation of genes with up to 92% efficiency due to its naturally inactivated nuclease domain
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Answer:
B. a nucleus
Explanation:
cell walls and chloroplast are both found in plant cells, not in animal cells
Answer
Gametes that fertilize an ovum are called the sperms
Explanation
The reproductive cells of an organism are called the gametes or sex cells. Female sex cells are the ova/egg where as male sex cells are the sperms. The sperms are stored in the scrotum after their production in the male testes where as the eggs for females mature in female ovaries. During fertilization, sex cells meet in the Fallopian tube.