The second answer, it is durable because it is tested, is the correct answer choice. This is because science cannot be based on opinion or personal philosophy, and science is constantly chaging and being updated as we learn more about our world and the things around it.
A good expression vector for protein expression in coli should have features like an origin of replication, a selectable marker, a promotor, an operator, and a ribosome binding site.
A Ribosome Binding Site (RBS) is a part or segment of the upstream part of a messenger RNA (mRNA) molecule which binds the ribosome to position the message correctly for the initiation of translation.
Selectable marker genes are conditionally dominant genes that confer an ability to grow in the presence of applied selective agents that are normally toxic to cells or inhibitory to growth, such as antibiotics and herbicides.
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The number of chromosomes doubles. ... offspring would be genetically identical.
Answer:
B) decreased chromatin condensation
Explanation:
The addition of acetyl groups to the histone tails results in a less packed state of chromatin. The acetylation of multiple Lys residues in the amino-terminal domains of histones H3 and H4 reduces the affinity of the entire nucleosome for DNA. It occurs since acetylation reduces the total positive charge present on histone proteins. Histone proteins are positively charged and pack the negatively charged DNA around them. Therefore, increased acetylation results in decreased condensation of chromatin. The loosely packed DNA is accessible by RNA polymerase and transcription factors for gene expression.
Answer:
1) Consider what might have happened and modify the experimental method to retest the hypothesis differently.
2) Toss out any incorrect results that do not support the original hypothesis and repeat the experiment using the same methods.
3) Examine the procedural flaws that occurred during the experiment and summarize them in a conclusion statement.
4) Repeat the experiment, but this time adjust the new data to support the original hypothesis.
5) Toss out any incorrect results that do not support the original hypothesis and repeat the experiment using the same methods.