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White raven [17]
3 years ago
10

LIST THE THREE MAIN APPROACHES THAT ECOLOGISTS USE TO STUDY THE ENVIRONMENTAL SYSTEMS?

Biology
1 answer:
ankoles [38]3 years ago
7 0
Observation, modeling, and experimentation
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The garden plants and snails stay balanced as they are still being eaten. However, if the cat is removed, the birds will overpopulate and then the snail would be eaten and decrease faster which gives garden plants an increase in population due to the decrease in snails. Hope this helps! 
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Chromosome duplications and deletions frequently result in abnormal phenotypes or inviable gametes. Which factor is a major cont
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Chromosome duplications and deletions frequently result in abnormal phenotypes or inviable gametes. Gene dosage is modified is a major contributor to this phenomenon.

In the field of genetics, we can define gene dosage as the quantitative measure or copies of a particular gene that is present in an organism. Abnormalities in the gene dosage at a particular location can cause severe damage to the resulting phenotype.

Gene dosage can lead to chromosome duplications if the copy number or gene product is more and it can cause deletions if the copy number or gene product is less. Such complications will result in abnormal phenotypes or inviable gametes. For example, in Down's syndrome, the person has a modification of the 21st chromosome as there is one extra 21st chromosome present. This leads to a variety of diseases and defects in the person.

Although a part of your question is missing, you might be referring to this question:

Chromosome duplications and deletions frequently result in abnormal phenotypes or inviable gametes. Which factor is a major contributor to this phenomenon?

a. Recessive diseases are unmasked by additional copies.

b. The genes are found in a novel arrangement.

c. Gene dosage is modified.

To learn more about deletions, click here: brainly.com/question/2033407

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4 0
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What is the ONLY organ located in the region (umbilical)?
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An atom of an element that has a different number of neutrons that the standard atom of that element
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That would be an isotope
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