Answer:
an independent variable is a variable that changes an a dependent variable is something that doesn't change
Explanation:
like if i put two fish is different size tanks and measured them after so long
measuring them would be dependent and putting them in different size tanks would be independent
Answer:
The correct answer is "Transgenics".
Explanation:
The missing options of this question are:
A. Artificial selection
B. Transgenics
C. Bioreaction
D. Recombination
The correct answer is option B. "Transgenics"
Transgenics is a term used to describe the artificial insertion of one or more DNA sequences to an organism that would normally not have it. In this example, the term transgenics applies to the cows that serve as hosts for the production of the spider silk. The process transgenics is what gives the name to terms such as "transgenic food", "transgenic plants" or "transgenic animals".
Answer:
The correct answer is A) Histone deacetylation generally decreases gene expression.
Explanation:
Histones are the proteins that are responsible for the condensation of chromatin, which is directly linked to the capacity that a gene has to be expressed. The more condensed a gene is, the less expressible it becomes.
In order to regulate the gene expression, histones can suffer from many modifications that can change their conformation and the expressiveness of specific genes.
<u>Histone acetylation is linked with an increase of gene expression; while deacetylation and methylation decrease gene expression.</u>
Answer:
Producers are the foundation of a food chain.
Explanation:
They provide energy for all of the consumers in an ecosystem.
