The DNA microarray is a technology that is used to identify whether a specific person's DNA has mutations in genes like BRCA1 and BRCA2 which cause cancer.
- Therefore, a microarray assesses the quantity of mRNA transcripts in a sample, A genome-wide perspective of gene expression in cancer can be obtained since thousands of gene fragments can be found on an array.
- The idea behind microarrays is that sequences that are complimentary to one another will bind to one another.
- Restrictions endonucleases fragment the unidentified DNA molecules, which are then labeled with fluorescent dyes.
- These are then given a chance to interact with DNA chip probes.
- Chemotherapy has a positive effect on one group while having a negative effect on the other.
- Gene-expression microarrays have shown that the two groups' gene-expression patterns differ.
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Answer:
The control group is the 15 young hemlocks trees with fencing around them to prevent deer from eating them.
Explanation:
An experiment is designed to test one or more hypotheses. For that, you need control and treatment groups. The control group is the non-effect group, it is the one from which you compare results from the treatment group. On the other hand, the treatment group is the effect group, it is the one that will be exposed to the "thing" that you want to test the effect of. Because you want to evaluate the impact of deers on the young hemlocks trees, the control should exclude deers.
In this case:
Hypothesis: Because deers eat young hemlocks trees and the population of deer had doubled in the last five years, the mature hemlocks trees are more abundant than the young hemlocks trees.
Control: group of 15 young hemlocks trees with fencing around them to prevent deer from eating them.
Treatment: a group of 15 young hemlocks trees with no fencing around them to permit deer eating them.
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The primary function of a radula is to aid in feeding.
An ecosystem consists of a community of organisms together with their physical environment. The Karner blue butterflies lay eggs on the plant wild lupine. It is highly dependent on the wild lupine plant for its survival. After hatching, the caterpillars feed on the wild lupine for about six weeks, pupate and emerge as butterflies which also feed on the nectar of the flowers of wild lupine.
Thus, Karner blue butterflies can be studied the organism level of ecology in understanding its adaptations that enables them to live in the specific habitat and also under population ecology due to its dependence on the wild lupine plant as a population, influencing its distribution and number.