Answer:
transformation
Explanation:
Transformation is one of the three methods of genetic recombinant in bacteria. The other two are transduction and conjugation. Transformation occurs when the bacterial cells take up the DNA and which in turn changes their phenotype.
Transformation requires that there should not be any cell to cell contact. In the experiments performed by Griffith, the heat-killed virulent S strains were mixed with live R strains. The R strain took the DNA of heat-killed S strains which in turn converted them into the virulent strains. Since this horizontal gene transfer did not include any cell-to-cell contact, he called the process transformation.
While working in labs with chemicals or specimens one should follow good laboratory practices. Professional conduct and manner should be maintained during working in labs.
The action that should be taken by a student is:
Option B. Wear a lab apron or lab coat over the clothing.
The good lab practices can be explained as:
- To avoid staining clothes individuals should wear lab coats over their clothes.
- Lab coats avoid staining and splashing your skin and clothes from chemicals and dyes.
- Lab coats are designed to protect against corrosive chemicals from soaking into the skin.
Therefore, the student should wear lab coats and aprons.
To learn more about lab coats and laboratory practices follow the link:
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Vascular, because it has special tubes to transport nutrients to it's leaves and flowers.
A bird with mutation that made its beak stronger so that it can now crack many different types of nuts.
It is C. Advantageous mutation as it provides an advantage.
Cells that are produced by meiosis are best described as C. Gametes;haploid as they only have half the number of chromosomes.
A cell from the same organism have the same D. DNA.
By definition, C. Crossing over only occurs in meiosis that does not happen in mitosis.
