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ser-zykov [4K]
3 years ago
13

What is different about the structure of active genes versus inactive genes?

Biology
2 answers:
slava [35]3 years ago
8 0

Chromatin structure of globin and ovalbumin genes in chicken erythrocyte nuclei has been investigated by means of th
Sergeu [11.5K]3 years ago
3 0

The basic difference between active genes and inactive genes is that active genes are expressed whereas inactive genes are not expressed. This is due to the DNA methylation of the sequences. For DNA replication or copying it must be accessible to the enzymes and the enzymes can access euchromatin and cannot access heterochromatin. The euchromatin is loosely packed form of DNA while heterochromatin is tightly packed form of the DNA. Therefore, the heterochromatin contains the active form of inactive form of genes or the genes are said to be silenced. The DNA bound around the histone proteins are heterochromatins are inaccessible to the enzymes as the histone proteins are in methylated form. The methylation of the histone proteins keeps the genes inactive.

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When dna microarrays containing asos are used to genotype snps, what form of dna constitutes the probe molecules?
umka2103 [35]

DNA microarray uses 20-40 sequence-specific oligonucleotides as probes to identify the SNP.

DNA microarray is a technique used to measure gene expression. It works on the principle of hybridization.

The genome of the reference organism is attached to a solid surface (silicon chip). The DNA of the test organism is made to hydride with the reference organism. Depending on the level of hybridization the fluorescent or the chemiluminescent is measured to identify the expression.

Single nucleotide polymorphism (SNP) is the change in the single nucleotide of the genome. SNPs can be identified with the help of DNA microarray.

To know more about DNA microarray, visit

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3 0
1 year ago
why is sustainable use of natural resources important? to ensure that natural resources are available for future generations to
zlopas [31]

Answer:

The correct answer is (a) to ensure that natural resources are available for future generations.

Sustainable development means optimized use of natural resources to meet the demand of people in the present and future scenario. The main aim of sustainable development is to balance our economic, environmental and social needs which allows the prosperity for now and future generations. Sustainability can only be maintained when the resources are used in a way that it meets the need of people, not the greed of people.This is done to ensure that natural resources are available for future generations.

Explanation:

Hope this helps...

6 0
2 years ago
Which observation would be the best evidence for a recent founder event or population bottleneck?
Bingel [31]
The best evidence of such phenomena could be a population's genetic variation decrease.
When a population bottleneck occur it means that for some reason (i.e. environmental events) the size of a population is largely reduced. This leads to reduction of the genetic variation in that new smaller population. When a bottleneck occur, the founder effect is normally seen, which is that one population is established by a small group of a previously larger population leading once again the genetic variation, now though with a bigger population, to be very reduced.
7 0
3 years ago
What type of biomolecule (lipid, protein, nucleic acid, or carbohydrate) is chlorophyll?
choli [55]
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3 0
3 years ago
Which of the following statements is NOT true of mitosis?
svlad2 [7]
A is the correct answer
4 0
3 years ago
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