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Mnenie [13.5K]
3 years ago
7

Alleles resistant to organophosphate insecticides first appeared in Asia and were introduced into mosquito populations in the Un

ited States via _______; these alleles quickly became fixed via _______.
Biology
1 answer:
timofeeve [1]3 years ago
5 0
<h2>Mutation & genetic drift</h2>

Explanation:

  • A mutation is characterized as a lasting change to the DNA succession in a quality. This change moves the hereditary message conveyed by the quality and can modify the amino corrosive arrangement of the protein the quality encodes. This implies future cells created by the quality will just convey a specific characteristic.  
  • Genetic Drift is the change in the hereditary structure of a populace after some time because of possibility or irregular occasions. In instances of hereditary float, for example, catastrophic events or periods of irregular climate, the age that makes due to repeat won't really be the fittest, yet the most fortunate. Hereditary float doesn't allude to a particular change in hereditary cells, rather to arbitrary events that impact a population's genetic makeup.
  • Hence, the right answer of the fill up the blank is "mutation and genetic drift".

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Cephalization, the clustering of neurons and interneurons in the anterior part of the animal, is apparent in I) mammals II) cnid
zzz [600]

Option (III) .Cephalization, the clustering of neurons and interneurons in the anterior part of the animal, is apparent in <u>Planaria.</u>

What is planaria?

  • Planaria is a genus of planarians in the family Planariidae.
  • When an individual is cut into pieces, each piece has the ability to regenerate into a fully formed individual.
  • Currently the genus Planaria is defined as freshwater triclads with oviducts that unite to form a common oviduct without embracing the bursa copulatrix and with an adenodactyl present in the male atrium.
  • The testes occur along the whole body.
  • Planaria originally have habitats in dark, murky water which results in such sensitivity .
  • They are also sensitive to other stimuli such as chemical gradients, vibration, magnetic and electric fields .
  • Their central nervous system includes the anterior (head, brain and eyes) and middle (abdominal trunk and pharynx).

To know more about planaria, refer:

brainly.com/question/1917416

#SPJ4

8 0
2 years ago
What is the effect of an emulsifier on the digestion of lipids
snow_lady [41]

Answer:

Emulsifier generally reduces the surface tension of the lipid  there by helping in the digestion of the lipid molecules.

Explanation:

Bile that is secreted from liver act as emulsifier because the bile helps in the break down of lipid into small molecules to form micelle thereby reducing the surface tension of the lipid molecules.

                  Due the formation of micelle the broken down lipid molecules binds to the active site of the lipase enzyme and get digested to form fatty acid and glycerol.

           Beside digestion Emulsifier Bile also helps in the absoption of lipid from the small intestine.

7 0
3 years ago
A Conversation between characters in a story
barxatty [35]

It's "Dialogue"

have a good day!

4 0
2 years ago
If there was a mutation changing the A to a G at position 11 in the DNA strand used for making the protein, what type of mutatio
olganol [36]

mutation-nomenclature

probably for sure

6 0
3 years ago
Living systems consist of organisms interacting with their environments. The carbon cycle is an example of a living system. Assu
cupoosta [38]

Explanation:

What are the different pools and fluxes of carbon? Why are they important? This page provides a compilation of information and relevant links to help answer some of these questions.

The Carbon Cycle: What is the Carbon Cycle? What is the fast and slow cycle and how are they influenced?

Carbon Measurement Approaches and Accounting Frameworks: Approaches and methods for carbon stock and flow estimations, measurements, and accounting

The North American Carbon Cycle: The latest (2018) assessment and budget

Webinar Series Videos: 'The State of the Carbon Cycle: From Science to Solutions'

The Global Carbon Budget : The Global Carbon Budget as calculated by a global group of scientists

Frequently asked questions and their answers: Answers to commonly asked questions such as the following are listed here: Can you quantify the sources and sinks of the global carbon cycle? How much carbon is stored in the different ecosystems? In terms of mass, how much carbon does 1 part per million by volume of atmospheric CO2 represent? What percentage of the CO2 in the atmosphere has been produced by human beings through the burning of fossil fuels?

7 0
3 years ago
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