Answer:
Nucleosomes
Explanation:
Nucleosomes
DNA is the heredity matter of the cell .
DNA is enclosed in the Nucleosomes which is present in the cell in the nucleus of the cell .
DNA is condensed together to form chromatin,
and further the chromatin are aligned to form chromosome , that are present in the nucleus of the cell .
Hence , the answer is Nucleosomes .
Answer:sharks such as great whites and tiger sharks will eat dolphins, porpoises, seals, sea lions, and other swimming mammals
Explanation:
Answer:
d) introducing a competing species.
Explanation:
Competition refers to a dynamic partnership in which various species or populations in the environment concurrently seek to utilize the same available resources. Organisms in an ecosystem compete for the same limited nutrients and in the process, one ultimately got an edge over the other. because resources are limited in nature, the population of one species decreases at the expense of the survival of the other.
Griffith experiment
Griffith used two types of bacteria in his experiment
1. R-type: it was non-virulent and cause no disease in mice
2. S-type: It was virulent and cause disease in mice which lead to death.
However when heat killed S-type was applied no disease was occurred in mice. Then he mixed heat killed S-type and live R-type and injected it into mice. He was expecting that no disease will be caused in mice.
Results
However, mice was died.
Conclusion
He was confused from this experiment. But later it was confirmed by other scientists that DNA from heat killed S-type was shifted to R-type. the progeny which formed from this transfer of DNA were virulent and cause the death of mice.
significance
It was concluded from this experiment that DNA is a hereditary material which transfer characters from parents to offspring.
