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spayn [35]
3 years ago
12

Without the presence of sea otters, sea urchins would otherwise overgraze kelp beds, dramatically changing the marine community

of which the urchins and otters are a part. for this reason, sea otters are considered what?
Biology
2 answers:
Rudiy273 years ago
5 0

your answer is " keystone species"

marishachu [46]3 years ago
4 0
The sea otter is considered a key stone species.
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Match the dna bases with what It is paired within dna
valina [46]

Answer:

Adenine - Thymine

Guanine - Cytosine

Thymine - Adenine

Cytosine - Guanine

Explanation:

A goes to T, and vice versa. C goes to G, and vice versa. No matter how many times you flip a strand of DNA, A will always go with T and C will always go to G.

If it helps you, C and G are both curved letters and look very similar to each other. That's how I remembered that they went together. :)

3 0
3 years ago
5. a. What technology produced the results illustrated here, and what is this
notsponge [240]

The technology that was used to produce the results illustrated in the image is gel electrophoresis and it is used for separating deoxyribonucleic acid (DNA) fragments.

Gel electrophoresis can be defined as a technology that is used in the laboratory for the separation of mixtures of deoxyribonucleic acid (DNA), ribonucleic acid (RNA) or other macromolecules such as proteins based on molecular size and charge.

In gel electrophoresis, an electric current is applied to the deoxyribonucleic acid (DNA) samples so as to create fragments that can be used to compare the various samples of deoxyribonucleic acid (DNA).

The steps involved in gel electrophoresis include the following:

  • Extraction of deoxyribonucleic acid (DNA).
  • DNA isolation and amplification.
  • Addition of deoxyribonucleic acid (DNA) to the gel wells.
  • Application of an electric current to the gel.
  • The separation of DNA bands based on molecular size and charge.
  • Deoxyribonucleic acid (DNA) bands are stained.

Read more: brainly.com/question/10413501

8 0
2 years ago
Sister chromatids of a pair of homologous chromosomes form tetrads, and crossing-over (exchange of genetic information between r
aleksandr82 [10.1K]

Crossing over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs in the prophase I stage of meiosis.

<h3>WHAT IS MEIOSIS?</h3>

Meiosis is the process whereby a single cell produces four daughter cells that are genetically different from one another.

Meiosis is able to ensure genetic diversity in the daughter cells due to a process called Crossing over.

Crossing over is the exchange of genetic material between the non-sister chromatids of homologous chromosomes. It occurs in the prophase I stage of meiosis.

Therefore, crossing over (exchange of genetic information between regions of non-sister chromatids in the tetrad) occurs in the prophase I stage of meiosis.

Learn more about crossing over at: brainly.com/question/394891

4 0
2 years ago
If each couple has only two offspring, this results in
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Less people and THE END OF THE WORLD 
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3 years ago
In antivirus filtering, the best ways to filter currently use ________. quizzlet
Anna [14]

In antivirus filtering, the best ways to filter currently use behavior detection. Behavior detection is an effective antivirus software that monitors the actions of malicious software and stop specific operations from occurring. Operations such as deleting files and modifying system settings are the types of actions that are stopped using behavior detection.






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